What sculpture is to a block of marble, education is to a human soul.

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

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

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

Opinion is the medium between knowledge and ignorance.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

If one cannot enjoy reading a book over and over again, there is no use in reading it at all.

Just when I thought there wasn't room enough for another thought in my head, I had this great idea.

Knowledge becomes evil if the aim be not virtuous.

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.

Study without desire spoils the memory, and it retains nothing that it takes in.

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

Better know nothing than half-know many things.

Any sufficiently advanced technology is indistinguishable from magic.

Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.

The highest activity a human being can attain is learning for understanding, because to understand is to be free.

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

Science is what we have learned about how to keep from fooling ourselves.

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

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