" is a truly admirable work, and should prove extremely valuable. There is really nothing to compete with it for its broad scope and lively, easy style."
-- John Ziman, Professor Emeritus of Physics at the University of Bristol, and Fellow of the Royal Society.

"Cziko outlines universal Darwinism as clearly and comprehensively as is possible in a book designed for a popular audience. Some readers will find his views as misleading as they are seductive. Others will find them highly suggestive, possibly worth pursuing in their own right. I find myself in this second group."
--David L. Hull, Nature 1995, October 12, Vol. 377, p. 494.

"Fascinating and unique, this strictly Darwinian presentation balances current attacks on Darwinism. Highly recommended . . ."
--H. James Birx, Library Journal, 1995, October 15, pp. 83-84.

"This book is clear, well-written, and shows an admirable range of scholarship. Cziko covers a diverse range of topics with considerable sophistication. The work is original and creative, and should appeal to a wide audience. In fact, it is one of those rare books that is both accessible to any educated reader and which makes a set of substantive and controversial claims of interest to specialists across many scientific fields."
--Paul Bloom, Department of Psychology, University of Arizona

"An up-to-date collection of selectionist arguments that will be useful to many readers. To the best of my knowledge, the existing recent book that is closest to this is Richard Dawkins' The Blind Watchmaker, to which Cziko liberally refers. But Cziko is arguing for a much more radical thesis--that a Darwinian mechanism is the only way to account for any kind of systematic fitness, in any domain. Even if one does not end up accepting this thesis, one cannot fail to be impressed by the breadth of the argument."
--Andrew G. Barto, Department of Computer & Information Science, University of Massachusetts, Amherst