Arthur Schopenhauer on thinking

Intellect is invisible to the man who has none.

Life is a business that does not cover the costs.

There is no more mistaken path to happiness than worldliness, revelry, high life.

Great minds discuss ideas. Average minds discuss events. Small minds discuss people.

Eleanor Roosevelt1884–1962

• Ideas

It is the mark of an educated mind to be able to entertain a thought without accepting it.

Aristotle384–322 BC

• Education
• Ideas

He who learns but does not think, is lost! He who thinks but does not learn is in great danger.

Confucius551–479 BC

• Education