Custom, then, is the great guide of human life. It is that principle alone, which renders our experience useful to us, and makes us expect, for the future, a similar train of events with those which have appeared in the past.
David HumeWhen we reflect on the shortness and uncertainty of life, how despicable seem all our pursuits of happiness.
David HumeBattles, revolutions, pestilence, famine, and death, are never the effect of those natural causes, which we experience. Prodigies,omens, oracles, judgments, quite obscure the few natural events, that are intermingled with them. But as the former grow thinner every pagewe soon learn, that there is nothing mysterious or supernatural in the case, but that all proceeds from the usual propensity of mankind towards the marvellous, and that, though this inclination may at intervals receive a check from sense and learning, it can never be thoroughly extirpated.
David HumeUpon the whole, necessity is something, that exists in the mind, not in objects; nor is it possible for us ever to form the most distant idea of it, consider'd as a quality in bodies. Either we have no idea of necessity, or necessity is nothing but that determination of thought to pass from cause to effects and effects to causes, according to their experienc'd union.
David Hume