Hume on superstition
David Hume is another towering freethinker of the era of Enlightenment. He rejected superstition, religion, theistic gods, but did not take a position on an impersonal god. Still he was accused of "atheism" and was denied a coveted Chair at University of Edinburgh because of it.
Here is a taste of Hume's forceful criticism of religious superstitions:
… It is certain, that, in every religion, however sublime the verbal definition which it gives of its divinity, many of the votaries, perhaps the greatest number, will still seek the divine favor, not by virtue and good morals, which alone can be acceptable to a perfect being, but either by frivolous observances, by intemperate zeal, by rapturous extasies, or by the belief of mysterious and absurd opinions. The least part of the Sadder (Jewish text), as well as of the Pentateuch (Bible – OT), consists in precepts of morality; and we may also be assured, that that part was always the least observed and regarded.
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This observation, then, holds universally. But still one may be at some loss to account for it. It is not sufficient to observe, that the people, everywhere, degrade their deities into a similitude with themselves, and consider them merely as a species of human creatures, somewhat more potent and intelligent. This will not remove the difficulty. For there is no man so stupid, as that, judging by his natural reason, he would not esteem virtue and honesty the most valuable qualities, which any person could possess. Why not ascribe the same sentiment to his deity? Why not make all religion, or the chief part of it, to consist in these attainments?
Nor is it satisfactory to say, that the practice of morality is more difficult than that of superstition; and is therefore rejected. For, not to mention the excessive penances of the Brachmans (Brahmins) and Talapoinss (Buddists); it is certain, that the Rhamadan of the Turks, during which the poor wretches, for many days, often in the hottest months of the year, and in some of the hottest climates of the world, remain without eating or drinking from the rising to the setting sun; this Rhamadan, I say, must be more severe than the practice of any moral duty, even to the most vicious and depraved of mankind. The four Lents of the Muscovites, and the austerities of some Roman Catholics, appear more disagreeable than meekness and benevolence. In short, all virtue, when men are reconciled to it by ever so little practice, is agreeable: All superstition is forever odious and burthensome.