This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...e is to succeed at the task of survival, if his actions are not to be aimed at his own destruction, man has to choose his course, his goals, his values in the context and terms of a lifetime. No sensations, percepts, urges or “instincts” can do it; only a mind can.

Such is the meaning of the definition: that which is required for man’s survival qua man. It does not
mean a momentary or a merely physical survival. It does not mean the momentary physical survival of a mindless brute, waiting for another brute to crush his skull. It does not mean the momentary...
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