A man begins cutting his wisdom teeth the first time he bites off more than he can chew.
A prudent question is one-half of wisdom.
All this worldly wisdom was once the unamiable heresy of some wise man.
Henry David Thoreau
By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest.
Cleverness is not wisdom.
Common sense in an uncommon degree is what the world calls wisdom.
Samuel Taylor Coleridge
Does wisdom perhaps appear on the earth as a raven which is inspired by the smell of carrion?
Every man is a damn fool for at least five minutes every day; wisdom consists in not exceeding the limit.
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