“To live, man must hold three things as the supreme and ruling values of his life: Reason—Purpose—Self-esteem. Reason, as his only tool of knowledge—Purpose, as his choice of the happiness which that tool must proceed to achieve—Self-esteem, as his inviolate certainty that his mind is competent to think and his person is worthy of happiness, which means: is worthy of living.” Ayn Rand
“Those oil wells, Eddie thought suddenly, didn’t they have something in common with the blood vessels on the map? Wasn’t that the way the red stream of Taggart Transcontinental had shot across the country, years ago, a feat that seemed incredible now? He thought of the oil wells spouting a black stream that ran over a continent almost faster than the trains of the Phoenix-Durango could carry it. That oil field had been only a rocky patch in the mountains of Colorado, given up as exhausted long ago. Ellis Wyatt’s father had managed to squeeze an obscure living to the end of his days, out of the dying oil wells. Now it was as if somebody had given a shot of adrenalin to the heart of the mountain, the heart had started pumping, the black blood had burst through the rocks—of course it’s blood, thought Eddie Willers, because blood is supposed to feed, to give life, and that is what Wyatt Oil had done.” Atlas Shrugged by Ayn Rand
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“In regard to nature, “to accept what I cannot change” means to accept the metaphysically given; “to change what I can” means to strive to rearrange the given by acquiring knowledge—as science and technology (e.g., medicine) are doing; “to know the difference” means to know that one cannot rebel against nature and, when no action is possible, one must accept nature serenely. . . . What one must accept is the fact that the minds of other men are not in one’s power, as one’s own mind is not in theirs; one must accept their right to make their own choices, and one must agree or disagree, accept or reject, join or oppose them, as one’s mind dictates. The only means of “changing” men is the same as the means of “changing” nature: knowledge—which, in regard to men, is to be used as a process of persuasion, when and if their minds are active; when they are not, one must leave them to the consequences of their own errors. . . .
To deal with men by force is as impractical as to deal with nature by persuasion.”
“The Metaphysical and the Man-made” by Ayn Rand