"Kropotkin was far ahead of his time. He rejected both authoritarian communism and the iron cage of capitalism. He believed in the power of the individual, but equally that we can't survive without each other."-Rutger Bregman, Utopia for Realists and Humankind
"Russian social theorist Peter Kropotkin ... argued that voluntary cooperation has been key to the flourishing of human civilization."-The New York Times
"Kropotkin's ideas on mutual aid played a prominent, critical role in the study of behavior and evolution."-Scientific American
"Make no mistake: the story that started with Pyotr Alexeyevich Kropotkin is far from finished. On the contrary, I believe there's a good chance that it's only just begun."-Rutger Bregman, Utopia for Realists and Humankind
"Today, anthropologists, political scientists, economists and psychologists publish hundreds of studies each year on human cooperation, and researchers in these fields are just beginning to realize that so many of the topics they are investigating were first suggested and promulgated by Peter Kropotkin."-Lee Alan Dugatkin, Scientific American
"The book is undeniably readable throughout. The author has a creed which he preaches with all the fervour of genuine conviction. He is anxious to make converts, but his zeal never leads him to forget fairness and courtesy. Those who disagree with him may learn much by studying the book."-Nature
"Literally hundreds of papers come out each year on animal cooperation - many in preeminent journals such as Nature and Science - and so many of these papers show Kropotkin to be a prophet."-Scientific American