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

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

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

The highest result of education is tolerance.

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad.

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

A cynic is a man who knows the price of everything, and the value of nothing.

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.

Men are born ignorant, not stupid. They are made stupid by education.

It is better to know how to learn than to know.

Real learning comes about when the competitive spirit has ceased.

Seek knowledge from the cradle to the grave.

Science is a way of thinking much more than it is a body of knowledge.

Knowing is not enough; we must apply. Willing is not enough; we must do.

Education is the most powerful weapon which you can use to change the world.

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

It is beyond a doubt that all our knowledge begins with experience.

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

I like poems you can tack all over with a hammer and there are no hollow places.

Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.