Ирина Осипенкоцитирует21 день назад
It will be only after we have well established the facts of mutual aid in different classes of animals, and their importance for evolution, that we shall be able to study what belongs in the evolution of sociable feelings, to parental feelings, and what to sociability proper—the latter having evidently its origin at the earliest stages of the evolution of the animal world, perhaps even at the "colony-stages."
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