The art of being wise is knowing what to overlook.

William James

A wise man learns by the mistakes of others, a fool by his own.

Latin proverb

No man was ever wise by chance.

Lucius Annaeus Seneca

The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.

Bertrand Russell

The only true wisdom is in knowing you know nothing.

Socrates

Study the past, if you would divine the future.

Confucius

Time is the wisest counsellor of all.

Pericles

Wisdom begins in wonder.

Socrates

Wisdom is the supreme part of happiness.

Sophocles

A short saying often contains much wisdom.

Sophocles

Love all, trust a few, do wrong to none.

William Shakespeare

Silence is a fence around wisdom.

German proverb