From the reviews:
This is not a book about foundations or formal logic. It is ... about the philosophy of mathematics, but perhaps more about the human practice of mathematics. ... This is a terrific collection of essays. ... all of the essays give us new insight into that curious thing we do when we do mathematics. (William J. Satzer, MathDL, January, 2006)
The current book is destined to become a classic as well for numerous reasons which will soon become transparent. ... Reuben Hersh is to be commended for orchestrating this masterful collection of essays from distinguished individuals ... . I predict that this book will become a classic for the coming generations of mathematics philosophers as well as for mathematics educators interested in changing dominant conceptions of what is mathematics, finally! (Bharath Sriraman, Zentralblatt fur Didaktik der Mathematik, Vol. 38 (4), 2006)
Editor Reuben Hersh has orchestrated a highly provocative book, particularly for mathematicians, but also for anyone interested in the philosophy and practice of mathematics. ... This is a very appealing collection of essays. ... I highly recommend this book to those wondering how math is carried out, both mathematicians and laymen. I also recommend it to educators interested in changing the dominant view of math and how to do math. (Hector Zenil, Computing Reviews, January, 2008)