The Importance of Altruism in Human Evolution

In proportion as physical characteristics become of less importance, mental and moral qualities will have an increasing importance to the well-being of the race. Capacity for acting in concert, for protection of food and shelter; sympathy, which leads all in turn to assist each other; the sense of right, which checks depredation upon our fellows ... all qualities that from earliest appearance must have been for the benefit of each community, and would therefore have become objects of natural ...