Every man must decide whether he will walk in the light of creative altruism or in the darkness of destructive selfishness.
— Martin Luther King, Jr.

In chimpanzee society, we find many, many examples of compassion, precursors to love and true altruism.
Jane Goodall altruism quote

Gratitude: An imaginary emotion that rewards an imaginary behavior, altruism. Both imaginaries are false faces for selfishness, which is a real and honest emotion.
— Robert A. Heinlein

I would rather be kept alive in the efficient if cold altruism of a large hospital than expire in a gush of warm sympathy in a small one.
— Aneurin Bevan

A glimpse of any one moment in a life can be deeply misleading. A man at 20 who appears the model of altruism may turn out to be a kind of emotional prodigy
— altruism quotation by Joshua Wolf Shenk