A Factor of EvolutionMutual Aid: A Factor of Evolution Peter Kropotkin 1902 Chapter 4: MUTUAL AID AMONG THE BARBARIANS The great migrations. -- New organization rendered necessary. -- The village community. -- Communal work. -- Judicial procedure -- Inter-tribal law. -- Illustrations from the life of our contemporaries -- Buryates. -- Kabyles. -- Caucasian mountaineers. -- African stems. It is not possible to study primitive mankind without being deeply impressed by the sociability it has displayed since its very first steps in life. Traces of human societies are found in the relics of both the oldest and the later stone age; and, when we come to observe the savages whose manners of life are still those of neolithic man, we find them closely bound together by an extremely ancient clan organization which enables them to combine their individually weak forces, to enjoy life in common, and to progress. Man is no exception in nature.