'Its authors are professors of philosophy and psychology, respectively, and together they bring to intellectual history an authoritative grasp of contemporary philosophical and psychological concerns. The upshot is an exceptionally rich and stimulating work in which intellectual historians, philosophers and psychologists will learn much about their own and others' disciplines - this is a splendid book full of fascinating information and insights, and it deserves a wide readership.' - Philosophical Books

'At every turn they seek to reassure the reader that some feature or another of the texts they discuss finds an echo in present-day debate - Identifying 'progress' in the history of ideas is, perhaps, a price worth paying if Naturalization of the Soul helps to awaken some interest in neglected figures from the past.' - Times Literary Supplement

'A solid piece of scholarship, based on a careful examination of an impressive number of primary texts. The authors have gone down both the philosophical byroads and the highroads, unearthing relatively obscure works, as well as illuminating some that are well-known. I found their accounts consistently thoughtful and intelligent.' - Mind