This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...ght, in a “static” universe, for someone’s causeless favor.

A rational man knows that one does not live by means of “luck,” “breaks” or favors, that there is no such
thing as an “only chance” or a single opportunity, and that this is guaranteed precisely by the existence of competition. He does not regard any concrete, specific goal or value as irre- pla ceable. He knows that only persons are irreplaceable — only those one loves.

He knows also that there are no conflicts of interests among rational men even in the issue of love. ...
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