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“He is happy, whose circumstances suit his temper; but he is more excellent, who can suit his temper to any circumstances.”
― David Hume, An Enquiry Concerning the Principles of Morals

“Truth is of two kinds, consisting either in the discovery of the proportions of ideas, consider'd as such, or in the conformity of our ideas of objects to their real existence (Hume, 1739, p. 495).”
― David Hume

“There is a great difference between historical facts and speculative opinions ; nor is the knowledge of the one propagated in the same manner with that of the other”
― David Hume , The Natural History of Religion

“In every system of morality, which I have hitherto met with, I have always remark’d, that the author proceeds for some time in the ordinary ways of reasoning, and establishes the being of a God, or makes observations concerning human affairs; when all of a sudden I am surpriz’d to find, that instead of the usual copulations of propositions, is, and is not, I meet with no proposition that is not connected with an ought, or an ought not. This change is imperceptible; but is however, of the last consequence. For as this ought, or ought not, expresses some new relation or affirmation, ‘tis necessary that it shou’d be observ’d and explain’d; and at the same time that a reason should be given; for what seems altogether inconceivable, how this new relation can be a deduction from others, which are entirely different from it.”
― David Hume, A Treatise of Human Nature