Summary

Portrait of David Hume David Hume Treatise of Human Nature/Book 3… (1739)

When any virtuous motive or principle is common in human nature, a person, who feels his heart devoid of that motive, may hate himself upon that account, and may perform the action without the motive, from a certain sense of duty, in order to acquire by practice, that virtuous principle, or at least, to disguise to himself, as much as possible, his want of it. A man that really feels no gratitude in his temper, is still pleas'd to perform grateful actions, and thinks he has, by that means, fulfill'd his duty.
Source: Wikisource

Portrait of David Hume David Hume Treatise of Human Nature/Book 3… (1739)

From all this it follows, that we have no real or universal motive for observing the laws of equity, but the very equity and merit of that observance; and as no action can be equitable or meritorious, where it cannot arise from some separate motive, there is here an evident sophistry and reasoning in a circle. Unless, therefore, we will allow, that nature has establish'd a sophistry, and render'd it necessary and unavoidable, we must allow, that the sense of justice and injustice is not deriv'd from nature, but arises artificially, tho' necessarily from education, and human conventions.
Source: Wikisource

Portrait of David Hume David Hume Treatise of Human Nature/Book 3… (1739)

Our sense of duty always follows the common and natural course of our passions.
To avoid giving offence, I must here observe, that when I deny justice to be a natural virtue, I make use of the word, natural, only as oppos'd to artificial. In another sense of the word; as no principle of the human mind is more natural than a sense of virtue; so no virtue is more natural than justice. Mankind is an inventive species
Source: Wikisource

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