Every man is a damn fool for at least five minutes every day; wisdom consists of not exceeding the limit.
Examinations are formidable even to the best prepared, for the greatest fool may ask more than the wisest man can answer.
—Charles Caleb Colton
Take risks: if you win, you will be happy; if you lose, you will be wise.
The older I grow, the more I listen to people who don't talk much.
—Germain G. Glien
A word to the wise is infuriating.
—Hunter S. Thompson
I had assumed that the earth, the spirit of the earth, noticed exceptions — those who wantonly damage it and those who do not. But the earth is wise. It has given itself into the keeping of all, and all are therefore accountable.
The first rule of holes: when you're in one, stop digging.
Never does nature say one thing and wisdom another.
Only the wisest and stupidest of men never change.
Books are the quietest and most constant of friends; they are the most accessible and wisest of counsellors, and the most patient of teachers.
—Charles W. Eliot
Society cannot exist unless a controlling power upon will and appetite be placed somewhere, and the less of it there is within, the more there must be without.
Ask counsel of both times-of the ancient time what is best, and of the latter time what is fittest.
—Francois de La Rochefoucauld
As one grows older, one becomes wiser and more foolish.
—Georg Christoph Lichtenberg
One's first step in wisdom is to question everything - and one's last is to come to terms with everything.
Force without wisdom falls of its own weight.