They might insist that they were ready to aid their fellow-apes of the same troop in many ways, to risk their lives for them, and to take charge of their orphans; but they would be forced to acknowledge that disinterested love for all living creatures, the most noble attribute of man, was quite beyond their comprehension.

Source:Part I. The Descent or Origin of Man, Chapter IV. Comparison of the Mental Powers of Man and the Lower Animals
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