William Shakespeare on wisdom

If music be the food of love, play on.

This above all: to thine own self be true, and it must follow, as the night the day, thou canst not then be false to any man.

Cowards die many times before their deaths. The valiant never taste of death but once.

The only true wisdom is in knowing you know nothing.

Socrates470–399 BC

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.

Confucius551–479 BC

True wisdom comes to each of us when we realize how little we
understand about life, ourselves, and the world around us.