You shall not, for the sake of one individual, change the meaning of principle and integrity, nor endeavour to persuade yourself or me, that selfishness is prudence, and insensibility of danger, security for happiness.
Unselfishness is a rare virtue, cause it just don’t pay.[Die Selbstlosigkeit ist eine seltene Tugend, weil sie sich nicht rentiert.]
There is something in the unselfish and self-sacrificing love of a brute, which goes directly to the heart of him who has had frequent occasion to test the paltry friendship and gossamer fidelity of mere Man.
Selfish persons are incapable of loving others, but they are not capable of loving themselves either.