I am a part of everything that I have read.
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
A thought is an idea in transit.
A cynic is a man who knows the price of everything, and the value of nothing.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
Knowing is not enough; we must apply. Willing is not enough; we must do.
If one cannot enjoy reading a book over and over again, there is no use in reading it at all.
A little knowledge that acts is worth infinitely more than much knowledge that is idle.
The books that the world calls immoral are books that show the world its own shame.
All stable processes we shall predict. All unstable processes we shall control.
Civilization is a race between disaster and education.
I do not know how to teach philosophy without becoming a disturber of the peace.
A child miseducated is a child lost.
Seek knowledge from the cradle to the grave.
Science is what we have learned about how to keep from fooling ourselves.
Books are as useful to a stupid person as a mirror is useful to a blind person.
Books are for people who wish they were somewhere else.
Education is the most powerful weapon which you can use to change the world.
The progressive development of man is vitally dependent on invention.
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.
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.