William Blake on wisdom

If the doors of perception were cleansed every thing would appear to man as it is, infinite. For man has closed himself up, till he sees all things thru’ narrow chinks of his cavern.

I was angry with my friend I told my wrath, my wrath did end. I was angry with my foe: I told it not, my wrath did grow.

What is now proved was once only imagined.

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.