This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...ong living beings (as against inanimate matter), that other men are potentially able to achieve the same virtues as his own and thus be of enormous value to him. This does not mean that he regar ds human lives as interchangeable with his own. He recognizes the fact that his own life is the source , not only of all his values, but of his capacity to value. Therefore, the value he grants to others is only a consequence, an extension, a secondary projection of the primary value which is himself.

“The respect and good will that men of self-esteem feel toward other ...
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