Morals excite passions, and produce or prevent actions. Reason of itself is utterly impotent in this particular. The rules of morality, therefore, are not conclusions of our reason.
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Part 1 Of virtue and vice in general, Sect. 1 Moral distinctions not deriv'd from reasonDavid Hume
Actions may be laudable or blameable; but they cannot be reasonable: Laudable or blameable, therefore, are not the same with reasonable or unreasonable. The merit and demerit of actions frequently contradict, and sometimes controul our natural propensities. But reason has no such influence. Moral distinctions, therefore, are not the offspring of reason. Reason is wholly inactive, and can never be the source of so active a principle as conscience, or a sense of morals.
David Hume
This internal war of reason against the passions has made a division of those who would have peace into two sects. The first would renounce their passions, and become gods; the others would renounce reason, and become brute beasts. But neither can do so, and reason still remains, to condemn the vileness and injustice of the passions, and to trouble the repose of those who abandon themselves to them; and the passions keep always alive in those who would renounce them. 413
Blaise Pascal
There is internal war in man between reason and the passions. If he had only reason without passions. If he had only passions without reason. But having both, he cannot be without strife, being unable to be at peace with the one without being at war with the other. Thus he is always divided against, and opposed to himself. 412
Blaise Pascal
Such people as can be prevailed upon to believe, that their reason is depraved, may easily be led by the nose, and duped into superstition at the pleasure of those in whom they confide, and there remain from generation to generation: for when they throw by the law of reason the only one which God gave them to direct them in their speculations and duty, they are exposed to ignorant or insidious teachers, and also to their own irregular passions, and to the folly and enthusiasm of those about them, which nothing but reason can prevent or restrain...
Ethan Allen
The conservative has little to fear from the man whose reason is the servant of his passions, but let him beware of him in whom reason has become the greatest and most terrible of passions. These are the wreckers of outworn empires.
Freeman Dyson
Hume, David
Humphrey, Hubert
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