“Readers will find this an interesting attempt to articulate a position on observation and conceptual understanding of the world that is grounded, on the one hand, in an appreciation of the concreteness and particularity of experience but that also avoids such ‘extreme’ positions as complete relativism and reductive materialism. Radder’s clear, direct style makes this an enjoyable journey through a surprisingly wide range of central topics.”

—Mind

“Radder has infused new life into the age-old problem or paradox involving the standard polarity between the mind-dependent and -independent approaches to the world. . . . Required reading for those philosophers and scientists concerned with this paradox and the larger mind-brain problem.”

—Philosophical Psychology

“Hans Radder undertakes the investigation of one of the deepest questions in general philosophy, the relationship between the human observer and the material world, in the context of the philosophy of science. The argument moves from refining and defining the thesis that concepts are essential to observation to a demonstration of how concepts enter into the world as perceived. This original and powerful study includes not only a philosophical analysis of the concept of abstraction but also a discussion of the practical issue of patenting the products of concept-driven research. The book is strongly to be recommended for the breadth of its content and for the clarity of exposition.”

--Rom Harré, Georgetown University