This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
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Any action that a man undertakes for the benefit of those he loves is not a sacrifice if, in the hierarchy of his values, in the total context of the choices open to him, it achieves tha
t which is of greatest personal (and rational) importance to him. In the above example, his wife’s survival is of greater value to the husband than anything else that his money could buy, it i s of greatest importance to his own happiness and, therefore, his action is not a sacrifice.

But suppose he let her die in order to spend his money on saving the lives of ten other...
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