This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...all, it means one’s rejection of the role of a sacrificial animal, the rejection of any doctrine that preaches self-immolation as a moral virtue or duty.

The basic social princip
le of the Objectivist ethics is that just as life is an end in itself, so every living human being is an end in himself, not the means to the ends or the welfare of others — and, therefore, th at man must live for his own sake, neither sacrificing himself to others nor sacrificing others to himself. To live for his own sake means that the achievement of his own happiness is man ’s h...
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