“These things are the foes of morality. They subvert all natural conceptions of virtue.”
What Would You Substitute for the Bible as a Moral Guide? (1900)
Context: These religions teach the slave virtues. They make inanimate things holy, and falsehoods sacred. They create artificial crimes. To eat meat on Friday, to enjoy yourself on Sunday, to eat on fast-days, to be happy in Lent, to dispute a priest, to ask for evidence, to deny a creed, to express your sincere thought, all these acts are sins, crimes against some god, To give your honest opinion about Jehovah, Mohammed or Christ, is far worse than to maliciously slander your neighbor. To question or doubt miracles. is far worse than to deny known facts. Only the obedient, the credulous, the cringers, the kneelers, the meek, the unquestioning, the true believers, are regarded as moral, as virtuous. It is not enough to be honest, generous and useful; not enough to be governed by evidence, by facts. In addition to this, you must believe. These things are the foes of morality. They subvert all natural conceptions of virtue.
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Robert G. Ingersoll 439
Union United States Army officer 1833–1899Related quotes

Philosophy and Religion 1804)

“The deadliest foe to virtue would be complete self-knowledge.”
No. 68.
Aphorisms (1930)

Bartlett's Familiar Quotations, 10th ed. (1919), Journal

1840s, Heroes and Hero-Worship (1840), The Hero as Poet
Context: Paganism we recognized as a veracious expression of the earnest awe-struck feeling of man towards the Universe; veracious, true once, and still not without worth for us. But mark here the difference of Paganism and Christianism; one great difference. Paganism emblemed chiefly the Operations of Nature; the destinies, efforts, combinations, vicissitudes of things and men in this world; Christianism emblemed the Law of Human Duty, the Moral Law of Man. One was for the sensuous nature: a rude helpless utterance of the first Thought of men,—the chief recognized virtue, Courage, Superiority to Fear. The other was not for the sensuous nature, but for the moral. What a progress is here, if in that one respect only—!

“Virtue is the mistress of all things. Virtue is the master of all things.”
(6 August 1796)
1750s, Diaries (1750s-1790s)
Context: Omnium rerum domina, virtus. Virtue is the mistress of all things. Virtue is the master of all things. Therefore a nation that should never do wrong must necessarily govern the world. The might of virtue, the power of virtue, is not a very common topic, not so common as it should be.

these, though but the feeble steps of an understanding limited in its faculties and its materials of knowledge, are of more avail than the ambitious attempt to arrive at a certainty unattainable on the ground of natural religion. And as these were the most ancient, so are they still the most solid foundations, Revelation being set apart, of the belief that the course of this world is not abandoned to chance and inexorable fate.
Also found in Boole, George (1851). The claims of science, especially as founded in its relations to human nature; a lecture, Volume 15. p. 24
Source: 1850s, An Investigation of the Laws of Thought (1854), p. 217: Ch. 13. Clarke and Spinoza : Concluding remarks of the chapter

Of Adversity
Essays (1625)
Context: The virtue of prosperity, is temperance; the virtue of adversity, is fortitude; which in morals is the more heroical virtue. Prosperity is the blessing of the Old Testament; adversity is the blessing of the New; which carrieth the greater benediction, and the clearer revelation of God's favor. Yet even in the Old Testament, if you listen to David's harp, you shall hear as many hearse-like airs as carols; and the pencil of the Holy Ghost hath labored more in describing the afflictions of Job, than the felicities of Solomon. Prosperity is not without many fears and distastes; and adversity is not without comforts and hopes.
The Impartial Spectator: Adam Smith's Moral Philosophy (2007), Ch. 1: Two Versions