This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand

By elevating the issue of helping others into the central and primary issue of ethics, altruism has destroyed the concept of any authentic benevolence or good will among men. It
has indoctrinated men with the idea that to value another human being is an act of selflessness, thus implying that a man can have no personal interest in others — that to value another means to sacrifice oneself — that any love, respect or admiration a man may feel for others is not and cannot be a source of his own enjoyment, but is a threat to his existence, a sacrificial blank...
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