This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...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.
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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
. We recognize that people have to live, after all.”
The defense, then, of this code of morality is that few people will be suicidal enough to attempt to practice it consistently...