This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...he context of the rest of his life, and that he allows no conflicts or contradictions between his short- range and long-range interests. He does not become his own destroyer by pursuing a desire today which wipes out all his values tomorrow.

A rational man does not indulge in wistful longings for ends divorced from means. He does not hold a desire without knowing (or lear
ning) and considering the means by which it is to be achieved. Since he knows that nature does not provide man with the automatic satisfaction of his desires, that a man’s goals or values have...
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