Peter Kropotkin, the Anarchist Prince (he was actually a ‘prince’ by blood, but rejected the title)

“In his book Mutual Aid: A Factor of Evolution, Kropotkin explored the widespread use of cooperation as a survival mechanism in human societies through their many stages, and animals. He used many real life examples in an attempt to show that the main factor in facilitating evolution is cooperation between individuals in free-associated societies and groups, without central control, authority or compulsion. This was in order to counteract the conception of fierce competition as the core of evolution, that provided a rationalization for the dominant political, economic and social theories of the time; and the prevalent interpretations of Darwinism.”