This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...lash, if man holds the renunciation of this earth as the good, the renunciation of life, of mind, of happiness, of self. Under an anti-life morality, man makes himself worthy of living to the ex tent that he makes himself unable to live — and to the extent that he makes himself able to live, he makes himself unworthy of living.

The answer given by many defenders of tradi
tional morality is: “Oh, but people don’t have to go to extremes!” — meaning: “We don’t expect people to be fully moral. We expect them to smuggle some self-interest into their lives...
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