This book considers the place and value of knowledge in contemporary society. "Knowledge" is not a self-evident concept: both its denotations and connotations are historically situated. Since the Enlightenment, knowledge has been a matter of discovery through effort, and "knowledge for its own sake" a taken-for-granted ideal underwriting progressive education as a process which not only taught "for" and "about" something, but also ennobled the soul. While this ideal has not been explicitly rejected, in recent decades there has been a tacit move away from a strong emphasis on its centrality,...