This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...ich may or may not last a week or a year. “Man’s survival qua man” means the terms, methods, conditions and goals required for the survival of a rational being through the whole of his lif espan — in all those aspects of existence which are open to his choice.

Man cannot survive as anything but man. He can abandon his means of survival, his mind, he can turn himsel
f into a subhuman creature and he can turn his life into a brief span of agony — just as his body can exist for a while in the process of disintegration by disease. But he cannot succeed, as a...
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