Good humor is the health of the soul, sadness is its poison.

Not to perceive the little weaknesses and the idle but innocent affectations of the company may be allowable as a sort of polite duty. The company will be pleased with you if you do, and most probably will not be reformed by you if you do not.

The vulgar only laugh, but never smile; whereas well-bred people often smile, but seldom laugh.

Physical ills are the taxes laid upon this wretched life; some are taxed higher, and some lower, but all pay something.

Cultivate the habit of thinking ahead, and of anticipating the necessary and immediate consequences of all your actions.... Likewise in your pleasures, ask yourself what such and such an amusement leads to, as it is essential to have an objective in everything you do. Any pastime that contributes nothing to bodily strength or to mental alertness is a totally ridiculous, not to say, idiotic, pleasure.

I would have all intoleration intolerated in its turn.

A man of sense only trifles with them, plays with them, humors and flatters them, as he does with a sprightly and forward child; but he neither consults them about, nor trusts them with, serious matters.