The goal of philosophers is truth, but for a century or more they have been bothered by Nietzsche’s question, “What is the good of truth?” Barry Allen shows what truth has come to mean in the philosophical tradition, what is wrong with many of the ways of conceiving truth, and why philosophers refuse to confront squarely the question of the value of truth—why it is always taken to be an unquestioned concept. What is distinctive about Allen’s book is his historical approach. Surveying Western thought from the pre-Socratics to the present day, Allen identifies and criticizes two core assumptions: that truth implies a realist metaphysics, and that truth is a good thing.