Make it a rule never to give a child a book you would not read yourself.

Language is courage: the ability to conceive a thought, to speak it, and by doing so to make it true.

It is possible to fly without motors, but not without knowledge and skill.

Never help a child with a task at which he feels he can succeed.

The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.

All stable processes we shall predict. All unstable processes we shall control.

Dare to think for yourself.

Real learning comes about when the competitive spirit has ceased.

The man who does not read good books has no advantage over the man who can't read them.

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

The most savage controversies are those about matters as to which there is no good evidence either way.

I have no special talents. I am only passionately curious.

A witty saying proves nothing.

Better know nothing than half-know many things.

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.

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

Courage, conviction and confidence.

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

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

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

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.