"It is a long time since I have been as enthusiastic about a book on human evolution as I am about Richard Klein's "The Human Career"."--Leslie Aiello, "Times Higher Education Supplement"

"[This book] will set a standard by which future books, setting out the course of human evolution, may measure their success".--Bobby Joe Williams, "Quarterly Review of Biology"

"The best introduction to the problems and data of modern palaeoanthropology yet published".--Penny Dransart, "Antiquity"