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The ideas and terminology of Darwinism are so pervasive these days that it seems impossible to avoid them, let alone imagine a world without them. But in this remarkable rethinking of scientific history, Peter J. Bowler does just that. He asks: What if Charles Darwin had not returned from the voyage of the Beagle and thus did not write On the Origin of Species? Would someone else, such as Alfred Russel Wallace, have published the selection theory and initiated a similar transformation? Or would the absence of Darwin’s book have led to a different sequence of events, in which biology developed along a track that did not precipitate a great debate about the impact of evolutionism? Would there have been anything equivalent to social Darwinism, and if so would the alternatives have been less pernicious and misappropriated?

In Darwin Deleted, Bowler argues that no one else, not even Wallace, was in a position to duplicate Darwin’s complete theory of evolution by natural selection. Evolutionary biology would almost certainly have emerged, but through alternative theories, which were frequently promoted by scientists, religious thinkers, and moralists who feared the implications of natural selection. Because non-Darwinian elements of evolutionism flourished for a time in the real world, it is possible to plausibly imagine how they might have developed, particularly if the theory of natural selection had not emerged until decades after the acceptance of the basic idea of evolution. Bowler’s unique approach enables him to clearly explain the non-Darwinian tradition—and in doing so, he reveals how the reception of Darwinism was historically contingent. By taking Darwin out of the equation, Bowler is able to fully elucidate the ideas of other scientists, such as Richard Owen and Thomas Huxley, whose work has often been misunderstood because of their distinctive responses to Darwin.

Darwin Deleted boldly offers a new vision of scientific history. It is one where the sequence of discovery and development would have been very different and would have led to an alternative understanding of the relationship between evolution, heredity, and the environment—and, most significantly, a less contentious relationship between science and religion. Far from mere speculation, this fascinating and compelling book forces us to reexamine the preconceptions that underlie many of the current controversies about the impact of evolutionism. It shows how contingent circumstances surrounding the publication of On the Origin of Species polarized attitudes in ways that still shape the conversation today. 

With insight and wit, Robert J. Richards focuses on the development of evolutionary theories of mind and behavior from their first distinct appearance in the eighteenth century to their controversial state today. Particularly important in the nineteenth century were Charles Darwin's ideas about instinct, reason, and morality, which Richards considers against the background of Darwin's personality, training, scientific and cultural concerns, and intellectual community. Many critics have argued that the Darwinian revolution stripped nature of moral purpose and ethically neutered the human animal. Richards contends, however, that Darwin, Herbert Spencer, and their disciples attempted to reanimate moral life, believing that the evolutionary process gave heart to unselfish, altruistic behavior.

"Richards's book is now the obvious introduction to the history of ideas about mind and behavior in the nineteenth century."—Mark Ridley, Times Literary Supplement

"Not since the publication of Michael Ghiselin's The Triumph of the Darwinian Method has there been such an ambitious, challenging, and methodologically self-conscious interpretation of the rise and development and evolutionary theories and Darwin's role therein."—John C. Greene, Science

"His book . . . triumphantly achieves the goal of all great scholarship: it not only informs us, but shows us why becoming thus informed is essential to understanding our own issues and projects."—Daniel C. Dennett, Philosophy of Science

Drawing on his investigation of over one hundred mid-Victorian British newspapers and periodicals, Alvar Ellegård describes and analyzes the impact of Darwin's theory of evolution during the first dozen years after the publication of the Origin of Species. Although Darwin's book caused an immediate stir in literary and scientific periodicals, the popular press largely ignored it. Only after the work's implications for theology and the nature of man became evident did general publications feel compelled to react; each social group responded according to his own political and religious prejudices. Ellegård charts the impact of this revolution in science, maintaining that although the idea of evolution was generally accepted, Darwin's primary contribution, the theory of natural selection, was either ignored or rejected among the public.

Darwin’s concept of natural selection has been exhaustively studied, but his secondary evolutionary principle of sexual selection remains largely unexplored and misunderstood. Yet sexual selection was of great strategic importance to Darwin because it explained things that natural selection could not and offered a naturalistic, as opposed to divine, account of beauty and its perception. 
 
Only now, with Darwin and the Making of Sexual Selection, do we have a comprehensive and meticulously researched account of Darwin’s path to its formulation—one that shows the man, rather than the myth, and examines both the social and intellectual roots of Darwin’s theory. Drawing on the minutiae of his unpublished notes, annotations in his personal library, and his extensive correspondence, Evelleen Richards offers a richly detailed, multilayered history. Her fine-grained analysis comprehends the extraordinarily wide range of Darwin’s sources and disentangles the complexity of theory, practice, and analogy that went into the making of sexual selection. Richards deftly explores the narrative strands of this history and vividly brings to life the chief characters involved. A true milestone in the history of science, Darwin and the Making of Sexual Selection illuminates the social and cultural contingencies of the shaping of an important—if controversial—biological concept that is back in play in current evolutionary theory.

Levine shows how Darwin's ideas affected nineteenth-century novelists—from Dickens and Trollope to Conrad. "Levine stands in our day as the premier critic and commentator on Victorian prose."—Frank M. Turner, Nineteenth-Century Literature. "Magnificently written, with a care and delicacy worthy of its subject."—Nina Auerbach, University of Pennsylvania

Why—against his mentor’s exhortations to publish—did Charles Darwin take twenty years to reveal his theory of evolution by natural selection? In Darwin’s Evolving Identity, Alistair Sponsel argues that Darwin adopted this cautious approach to atone for his provocative theorizing as a young author spurred by that mentor, the geologist Charles Lyell.  While we might expect him to have been tormented by guilt about his private study of evolution, Darwin was most distressed by harsh reactions to his published work on coral reefs, volcanoes, and earthquakes, judging himself guilty of an authorial “sin of speculation.” It was the battle to defend himself against charges of overzealous theorizing as a geologist, rather than the prospect of broader public outcry over evolution, which made Darwin such a cautious author of Origin of Species. 


Drawing on his own ambitious research in Darwin’s manuscripts and at the Beagle’s remotest ports of call, Sponsel takes us from the ocean to the Origin and beyond. He provides a vivid new picture of Darwin’s career as a voyaging naturalist and metropolitan author, and in doing so makes a bold argument about how we should understand the history of scientific theories.

For many people, the story of Charles Darwin goes like this: he ventured to the Galapagos Islands on the Beagle, was inspired by the biodiversity of the birds he saw there, and immediately returned home to write his theory of evolution. But this simplified narrative is inaccurate and lacking: it leaves out a major part of Darwin’s legacy. He published On the Origin of Species nearly thirty years after his voyages. And much of his life was spent experimenting with and observing plants.

Darwin was a brilliant and revolutionary botanist whose observations and theories were far ahead of his time. With Darwin’s Most Wonderful Plants, biologist and gardening expert Ken Thompson restores this important aspect of Darwin’s biography while also delighting in the botanical world that captivated the famous scientist. Thompson traces how well Darwin’s discoveries have held up, revealing that many are remarkably long-lasting. Some findings are only now being confirmed and extended by high-tech modern research, while some have been corrected through recent analysis.

We learn from Thompson how Darwin used plants to shape his most famous theory and then later how he used that theory to further push the boundaries of botanical knowledge. We also get to look over Darwin’s shoulder as he labors, learning more about his approach to research and his astonishing capacity for hard work. Darwin’s genius was to see the wonder and the significance in the ordinary and mundane, in the things that most people wouldn’t look at twice.
Both Thompson and Darwin share a love for our most wonderful plants and the remarkable secrets they can unlock. This book will instill that same joy in casual gardeners and botany aficionados alike.

For biologists, 2009 was an epochal year: the bicentennial of Charles Darwin’s birth and the 150th anniversary of the publication of a book now known simply as The Origin of Species. But for many botanists, Darwin’s true legacy starts with the 1862 publication of another volume: On the Various Contrivances by Which British and Foreign Orchids Are Fertilised by Insects and on the Good Effects of Intercrossing, or Fertilisation of Orchids. This slim but detailed book with the improbably long title was the first in a series of plant studies by Darwin that continues to serve as a global exemplar in the field of evolutionary botany. In Darwin’s Orchids, an international group of orchid biologists unites to celebrate and explore the continuum that stretches from Darwin’s groundbreaking orchid research to that of today.

Mirroring the structure of Fertilisation of Orchids, Darwin’s Orchids investigates flowers from Darwin’s home in England, through the southern hemisphere, and on to North America and China as it seeks to address a set of questions first put forward by Darwin himself: What pollinates this particular type of orchid? How does its pollination mechanism work? Will an orchid self-pollinate or is an insect or other animal vector required? And how has this orchid’s lineage changed over time? Diverse in their colors, forms, aromas, and pollination schemes, orchids have long been considered ideal models for the study of plant evolution and conservation. Looking to the past, present, and future of botany, Darwin’s Orchids will be a vital addition to this tradition.

Charles Darwin is easily the most famous scientist of the modern age, and his theory of evolution is constantly referenced in many contexts by scientists and nonscientists alike. And yet, despite how frequently his ideas are evoked, there remains a surprising amount we don’t know about the father of modern evolutionary thinking, his intellectual roots, and the science he produced. Debating Darwin seeks to change that, bringing together two leading Darwin scholars—Robert J. Richards and Michael Ruse—to engage in a spirited and insightful dialogue, offering their interpretations of Darwin and their critiques of each other’s thinking.
            Examining key disagreements about Darwin that continue to confound even committed Darwinists, Richards and Ruse offer divergent views on the origins and nature of Darwin and his ideas. Ruse argues that Darwin was quintessentially British and that the roots of his thought can be traced back to the eighteenth century, particularly to the Industrial Revolution and thinkers such as Adam Smith and Thomas Robert Malthus. Ruse argues that when these influences are appreciated, we can see how Darwin’s work in biology is an extension of their theories. In contrast, Richards presents Darwin as a more cosmopolitan, self-educated man, influenced as much by French and particularly German thinkers.  Above all, argues Richards, it was Alexander von Humboldt who both inspired Darwin and gave him the conceptual tools that he needed to find and formulate his evolutionary hypotheses. Together, the authors show how the reverberations of the contrasting views on Darwin’s influences can be felt in theories about the nature of natural selection, the role of metaphor in science, and the place of God in Darwin’s thought.
            Revealing how much there still is to investigate and interrogate about Darwin’s ideas, Debating Darwin contributes to our understanding of evolution itself. The book concludes with a jointly authored chapter that brings this debate into the present, focusing on human evolution, consciousness, religion, and morality. This will be powerful, essential reading for anyone seeking a comprehensive understanding of modern-day evolutionary science and philosophy.
 

Born on the same day in 1809, Abraham Lincoln and Charles Darwin were true contemporaries.  Though shaped by vastly different environments, they had remarkably similar values, purposes, and approaches. In this exciting new study, James Lander places these two iconic men side by side and reveals the parallel views they shared of man and God.

While Lincoln is renowned for his oratorical prowess and for the Emancipation Proclamation, as well as many other accomplishments, his scientific and technological interests are not widely recognized; for example, many Americans do not know that Lincoln is the only U.S. president to obtain a patent. Darwin, on the other hand, is celebrated for his scientific achievements but not for his passionate commitment to the abolition of slavery, which in part drove his research in evolution. Both men took great pains to avoid causing unnecessary offense despite having abandoned traditional Christianity. Each had one main adversary who endorsed scientific racism: Lincoln had Stephen A. Douglas, and Darwin had Louis Agassiz.

With graceful and sophisticated writing, Lander expands on these commonalities and uncovers more shared connections to people, politics, and events. He traces how these two intellectual giants came to hold remarkably similar perspectives on the evils of racism, the value of science, and the uncertainties of conventional religion.

Separated by an ocean but joined in their ideas, Lincoln and Darwin acted as trailblazers, leading their societies toward greater freedom of thought and a greater acceptance of human equality. This fascinating biographical examination brings the mid-nineteenth-century discourse about race, science, and humanitarian sensibility to the forefront using the mutual interests and pursuits of these two historic figures.

First published in 1974 as a companion volume to Darwin on Man by Howard E. Gruber, Paul Barrett’s transcriptions of Darwin’s M and N notebooks served to shed new light on the evolutionist’s methods and motivation.

According to Stephen Jay Gould in the New York Times Book Review, “Darwin kept [these notebooks] primarily in 1838, when he was 29 years old. In them, he recorded his early conviction of evolutionary continuity between humans and all other animals. . . . These notebooks display all the features of humanistic intellect that his detractors denied. We find erudition in his comments on Plato, Locke, Hume, Adam Smith, Whewell, Burke, Montaigne, Lessing and Spencer. . . . We appreciate an artistic bent in his delight with nature and her prophet Wordsworth. . . . We grasp the breadth of his bold attempt to clothe all human thought and behaviour in a new evolutionary garb. . . . Charles Darwin was reconstructing the world and he knew exactly what he was doing.” 

In Reading Darwin in Arabic, Marwa Elshakry questions current ideas about Islam, science, and secularism by exploring the ways in which Darwin was read in Arabic from the late 1860s to the mid-twentieth century. Borrowing from translation and reading studies and weaving together the history of science with intellectual history, she explores Darwin’s global appeal from the perspective of several generations of Arabic readers and shows how Darwin’s writings helped alter the social and epistemological landscape of the Arab learned classes.

           

Providing a close textual, political, and institutional analysis of the tremendous interest in Darwin’s ideas and other works on evolution, Elshakry shows how, in an age of massive regional and international political upheaval, these readings were suffused with the anxieties of empire and civilizational decline. The politics of evolution infiltrated Arabic discussions of pedagogy, progress, and the very sense of history. They also led to a literary and conceptual transformation of notions of science and religion themselves. Darwin thus became a vehicle for discussing scriptural exegesis, the conditions of belief, and cosmological views more broadly. The book also acquaints readers with Muslim and Christian intellectuals, bureaucrats, and theologians, and concludes by exploring Darwin’s waning influence on public and intellectual life in the Arab world after World War I.

Reading Darwin in Arabic is an engaging and powerfully argued reconceptualization of the intellectual and political history of the Middle East.

Robert Frost and the Challenge of Darwin gives us a new and compelling portrait of the poet-thinker as a modern Lucretius--moved to examine the questions raised by Darwin, and willing to challenge his readers with the emerging scientific notions of what it meant to be human.
Combining both intellectual history and detailed analysis of Frost's poems, Robert Faggen shows how Frost's reading of Darwin reflected the significance of science in American culture from Emerson and Thoreau, through James and pragmatism. He provides fresh and provocative readings of many of Frost's shorter lyrics and longer pastoral narratives as they illustrate the impact of Darwinian thought on the concept of nature, with particular exploration of man's relationship to other creatures, the conditions of human equality and racial conflict, the impact of gender and sexual differences, and the survival of religion.
The book shows that Frost was neither a pessimist lamenting the uncertainties of the Darwinian worldview, nor a humanist opposing its power. Faggen draws on Frost's unpublished notebooks to reveal a complex thinker who willingly engaged with the difficult moral and epistemological implications of natural science, and showed their consonance with myths and traditions stretching back to Milton, Lucretius, and the Old Testament. Frost emerges as a thinker for whom poetry was not only artistic expression, but also a forum for the trial of ideas and their impact on humanity.
Robert Frost and the Challenge of Darwin provides a deeper understanding not only of Frost and modern poetry, but of the meaning of Darwin in the modern world, the complex interrelations of literature and science, and the history of American thought.
"A forceful, appealing study of the Frost-Darwin relation, which has gone little noted by previous scholars, and a fresh explanation of Frost's ambivalent relation to modernism, which he scorned but also influenced" --William Howarth, Princeton University
Robert Faggen is Associate Professor of Literature, Claremont McKenna College and Adjunct Associate Professor, Claremont Graduate School.

This study explores how British romance fictions published between 1859 and 1914 absorbed distinctly Darwinian attitudes toward the epistemology of science—one that accorded with scientific speculation. Following the 1859 publication of On the Origin of Species, in which Charles Darwin acknowledged arriving at his thesis by allowing himself “to speculate on the subject” of species transmutation, many romance fiction writers embraced, criticized, and promoted acts of speculating characterized as scientific. The romance fictions discussed in this book recurred to Darwin’s speculative methodology more than to rigorous Baconian empiricism because it permitted them to draw pointedly imaginative conclusions in reasonable ways. Kate Holterhoff’s book examines how romance authors like Grant Allen, H. G. Wells, and Arthur Conan Doyle incorporated Darwinian ideas and speculative thinking into their works to advance their ideological and aesthetic goals. Holterhoff uses five paired genres and methods to analyze this engagement:

• scientific romance and experimentation,
• metaphysical romance and thought experiments,
• anthropological romance and reasoning with imperfect data,
• gothic romance and probability, and
• utopian romance and Malthusian political economy.

 

By focusing on Darwin’s influence in legitimizing speculative methods in science, the book places the interplay between British science and romance fiction into critical perspective and highlights Darwin’s enduring impact on Western culture.

The reaction to Darwin's Origin of Species varied in many countries according to the roles played by national scientific institutions and traditions and the attitudes of religious and political groups. The contributors to this volume, including M. J. S. Hodge, David Hull, and Roberto Moreno, gathered in 1972 at an international conference on the comparative reception of Darwinism. Their essays look at early pro- and anti-Darwinism arguments, and three additional comparative essays and appendices add a larger perspective. For this paperback edition, Thomas F. Glick has added a new preface commenting on recent research.

Originally published in 1979, The Darwinian Revolution was the first comprehensive and readable synthesis of the history of evolutionary thought. Though the years since have seen an enormous flowering of research on Darwin and other nineteenth-century scientists concerned with evolution, as well as the larger social and cultural responses to their work, The Darwinian Revolution remains remarkably current and stimulating.

For this edition Michael Ruse has written a new afterword that takes into account the research published since his book's first appearance.

"It is difficult to believe that yet another book on Darwin and the Darwinian Revolution could add anything new or contain any surprises. Ruse's book is an exception on all counts. Darwin scholars and the general reader alike can learn from it."—David L. Hull, Nature

"No other account of the Darwinian Revolution provides so detailed and sympathetic an account of the framework within which the scientific debates took place."—Peter J. Bowler, Canadian Journal of History

"A useful and highly readable synthesis. . .skillfully organized and written with verve, imagination, and welcome touches of humor."—John C. Greene, Science

Darwin's work of 1872 still provides the point of departure for research in the theory of emotion and expression. Although he lacked the modern research tool of cybernetics, his basic methods have not been improved upon: the study of infants, of the insane, of paintings and sculpture, of some of the commoner animals; the use of photographs of expression submitted to different judges; and the comparative study of expression among different peoples. This new edition will be warmly welcomed by those behavioral scientists who have recently shown an intense interest in the scientific study of expression. Lay readers, too, will be struck by the freshness and directness of this book, which includes, among other data, Darwin's delightfully objective analysis of his own baby's smiles and pouts.

Did Darwin see evolution as progressive, directed toward producing ever more advanced forms of life? Most contemporary scholars say no. In this challenge to prevailing views, Robert J. Richards says yes—and argues that current perspectives on Darwin and his theory are both ideologically motivated and scientifically unsound.

This provocative new reading of Darwin goes directly to the origins of evolutionary theory. Unlike most contemporary biologists or historians and philosophers of science, Richards holds that Darwin did concern himself with the idea of progress, or telos, as he constructed his theory. Richards maintains that Darwin drew on the traditional embryological meanings of the terms "evolution" and "descent with modification." In the 1600s and 1700s, "evolution" referred to the embryological theory of preformation, the idea that the embryo exists as a miniature adult of its own species that simply grows, or evolves, during gestation. By the early 1800s, however, the idea of preformation had become the concept of evolutionary recapitulation, the idea that during its development an embryo passes through a series of stages, each the adult form of an ancestor species.

Richards demonstrates that, for Darwin, embryological recapitulation provided a graphic model of how species evolve. If an embryo could be seen as successively taking the structures and forms of its ancestral species, then one could see the evolution of life itself as a succession of species, each transformed from its ancestor. Richards works with the Origin and other published and archival material to show that these embryological models were much on Darwin's mind as he considered the evidence for descent with modification.

Why do so many modern researchers find these embryological roots of Darwin's theory so problematic? Richards argues that the current tendency to see evolution as a process that is not progressive and not teleological imposes perspectives on Darwin that incorrectly deny the clearly progressive heart of his embryological models and his evolutionary theory.

The Moment of Racial Sight overturns the most familiar form of racial analysis in contemporary culture: the idea that race is constructed, that it operates by attaching visible marks of difference to arbitrary meanings and associations. Searching for the history of the constructed racial sign, Irene Tucker argues that if people instantly perceive racial differences despite knowing better, then the underlying function of race is to produce this immediate knowledge. Racial perception, then, is not just a mark of acculturation, but a part of how people know one another.

 

Tucker begins her investigation in the Enlightenment, at the moment when skin first came to be used as the primary mark of racial difference. Through Kant and his writing on the relation of philosophy and medicine, she describes how racialized skin was created as a mechanism to enable us to perceive the likeness of individuals in a moment. From there, Tucker tells the story of instantaneous racial seeing across centuries—from the fictive bodies described but not seen in Wilkie Collins’s realism to the medium of common public opinion in John Stuart Mill, from the invention of the notion of a constructed racial sign in Darwin’s late work to the institutionalizing of racial sight on display in the HBO series The Wire. Rich with perceptive readings of unexpected texts, this ambitious book is an important intervention in the study of race.

In this pathbreaking philosophical work, Elizabeth Grosz points the way toward a theory of becoming to replace the prevailing ontologies of being in social, political, and biological discourse. Arguing that theories of temporality have significant and underappreciated relevance to the social dimensions of science and the political dimensions of struggle, Grosz engages key theoretical concerns related to the reality of time. She explores the effect of time on the organization of matter and on the emergence and development of biological life. Considering how the relentless forward movement of time might be conceived in political and social terms, she begins to formulate a model of time that incorporates the future and its capacity to supersede and transform the past and present.

Grosz develops her argument by juxtaposing the work of three major figures in Western thought: Charles Darwin, Friedrich Nietzsche, and Henri Bergson. She reveals that in theorizing time as an active, positive phenomenon with its own characteristics and specific effects, each of these thinkers had a profound effect on contemporary understandings of the body in relation to time. She shows how their allied concepts of life, evolution, and becoming are manifest in the work of Gilles Deleuze and Luce Irigaray. Throughout The Nick of Time, Grosz emphasizes the political and cultural imperative to fundamentally rethink time: the more clearly we understand our temporal location as beings straddling the past and the future without the security of a stable and abiding present, the more transformation becomes conceivable.

In his Descent of Man, Charles Darwin placed sympathy at the crux of morality in a civilized human society. His idea buttressed the belief that white, upper-class, educated men deserved their sense of superiority by virtue of good breeding. It also implied that societal progress could be steered by envisioning a new blueprint for sympathy that redefined moral actions carried out in sympathy's name. Rob Boddice joins a daring intellectual history of sympathy to a portrait of how the first Darwinists defined and employed it. As Boddice shows, their interpretations of Darwin's ideas sparked a cacophonous discourse intent on displacing previous notions of sympathy. Scientific and medical progress demanded that "cruel" practices like vivisection and compulsory vaccination be seen as moral for their ultimate goal of alleviating suffering. Some even saw the so-called unfit--natural targets of sympathy--as a danger to society and encouraged procreation by the "fit" alone. Right or wrong, these early Darwinists formed a moral economy that acted on a new system of ethics, reconceptualized obligations, and executed new duties. Boddice persuasively argues that the bizarre, even dangerous formulations of sympathy they invented influence society and civilization in the present day.

What is a hostile environment? How exactly can feelings be mixed? What on earth might it mean when someone writes that he was “happily situated” as a slave? The answers, of course, depend upon whom you ask.

Science and the humanities typically offer two different paradigms for thinking about emotion—the first rooted in brain and biology, the second in a social world. With rhetoric as a field guide, Uncomfortable Situations establishes common ground between these two paradigms, focusing on a theory of situated emotion. Daniel M. Gross anchors the argument in Charles Darwin, whose work on emotion has been misunderstood across the disciplines as it has been shoehorned into the perceived science-humanities divide. Then Gross turns to sentimental literature as the single best domain for studying emotional situations. There’s lost composure (Sterne), bearing up (Equiano), environmental hostility (Radcliffe), and feeling mixed (Austen). Rounding out the book, an epilogue written with ecological neuroscientist Stephanie Preston provides a different kind of cross-disciplinary collaboration. Uncomfortable Situations is a conciliatory work across science and the humanities—a groundbreaking model for future studies.

In tracing the history of Darwin’s accomplishment and the trajectory of evolutionary theory during the late nineteenth and early twentieth centuries, most scholars agree that Darwin introduced blind mechanism into biology, thus banishing moral values from the understanding of nature. According to the standard interpretation, the principle of survival of the fittest has rendered human behavior, including moral behavior, ultimately selfish. Few doubt that Darwinian theory, especially as construed by the master’s German disciple, Ernst Haeckel, inspired Hitler and led to Nazi atrocities.