Though the wisdom or virtue of one can very rarely make many happy, the folly or vice of one man often make many miserable.
Most men are more willing to indulge in easy vices than to practise laborious virtues.
If misery be the effect of virtue, it ought to be reverenced; if of ill-fortune, to be pitied; and if of vice, not to be insulted, because it is perhaps itself a punishment adequate to the crime by which it was produced.
Pleasure itself is not a vice
Where secrecy or mystery begins, vice or roguery is not far off.
That friendship may be at once fond and lasting, there must not only be equal virtue on each part, but virtue of the same kind; not only the same end must be proposed, but the same means must be approved by both.
True enjoyments also keep people from vice.
Music is the only sensual pleasure without vice.