This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...nterests of rational men do not clash — other men may often benefit from his actions. But the benefit of other men is not his primary purpose or goal; his own benefit is his primary purpose an
d the conscious goal directing his actions.
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To make this principle fully clear, let us consider an extreme example of an action which, in fact, is selfish, but which conventionally
might be called self-sacrificial: a man’s willingness to die to save the life of the woman he loves. In what way would such a man be the beneficiary of his action?
The answer is...