Mutual aid: a factor of evolution is a book by Peter Kropotkin on the subject of mutual aid, written while he was living in exile in England. Recorded as an audiobook by LibriVox.
To attribute, therefore, the industrial progress of our century to the war of each against all which it has proclaimed, is to reason like the man who, knowing not the causes of rain, attributes it to the victim he has immolated before his clay idol.
Peter Kropotkin