Knowledge, Action, Devotion are complementary to each other.

Real learning comes about when the competitive spirit has ceased.

A witty saying proves nothing.

I decided to teach because I think that any person who studies philosophy has to be involved actively.

The ability to observe without evaluating is the highest form of intelligence.

The first idea the child must acquire is that of the difference between good and evil.

Books are as useful to a stupid person as a mirror is useful to a blind person.

Real knowledge is to know the extent of one's ignorance.

The knowledge of all things is possible

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.

I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.

What is freedom of expression? Without the freedom to offend, it ceases to exist.

If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.

Industrialize or perish.

Suddenly degrees aren't worth anything. Isn't that true? When I was a student, if you had a degree, you had a job. If you didn't have a job it's because you didn't want one. And I didn't want one, frankly.

If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.

I learned very early the difference between knowing the name of something and knowing something.

There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent.

In mathematics you don't understand things. You just get used to them.

What is now proved was once only imagined.

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.