No man's knowledge here can go beyond his experience.

The more I read, the more I acquire, the more certain I am that I know nothing.

To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.

Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.

The first principle is that you must not fool yourself and you are the easiest person to fool.

What we know is a drop, what we don't know is an ocean.

I do not know how to teach philosophy without becoming a disturber of the peace.

The task of a writer is not to solve the problem but to state the problem correctly.

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.

Civilization is a race between disaster and education.

Evil being the root of mystery, pain is the root of knowledge.

To educate a person in the mind but not in morals is to educate a menace to society.

Dare to think for yourself.

The only good is knowledge and the only evil is ignorance.

My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

Industrialize or perish.

I am indebted to my father for living, but to my teacher for living well.

Imagination is the source of every form of human achievement. And it's the one thing that I believe we are systematically jeopardizing in the way we educate our children and ourselves.

What is now proved was once only imagined.

Reading without reflecting is like eating without digesting.