This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...n with discovering what is to one’s self-interest, an acceptance of the responsibility of achieving it, a refusal ever to betray it by acting on the blind whim, mood, impulse or feeling of the
moment, an uncompromising loyalty to one’s judgment, convictions and values — represents a profound moral achievement. Those who assert that “everyone is selfish” commonly intend their
statement as an expression of cynicism and contempt. But the truth is that their statement pays mankind a compliment it does not deserve.
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