We may well ask, What causes induce us to believe in the existence of body? but 'tis vain to ask. Whether there be body or not? That is a point which we must take for granted in all our reasonings.
David HumeAll morality depends upon our sentiments; and when any action or quality of the mind pleases us after a certain manner we say it is virtuous; and when the neglect or nonperformance of it displeases us after a like manner, we say that we lie under an obligation to perform it.
David HumeAmong the arts of conversation no one pleases more than mutual deference or civility, which leads us to resign our own inclinations to those of our companions, and to curb and conceal that presumption and arrogance so natural to the human mind.
David HumeTo philosopher and historian the madness and imbecile wickedness of mankind ought to appear ordinary events.
David Hume