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

A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.

The only true wisdom is in knowing you know nothing.

The real solution lies in a world in which charity will have become unnecessary.

Reading is to the mind what exercise is to the body.

Knowledge becomes evil if the aim be not virtuous.

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.

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.

Necessity is the mother of invention.

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

I am a part of everything that I have read.

Learning gives creativity, Creativity leads to thinking, Thinking provides knowledge, Knowledge makes you great.

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

Physics is like sex: sure, it may give some practical results, but that's not why we do it.

There is one quality which one must possess to win, and that is definiteness of purpose, the knowledge of what one wants, and a burning desire to possess it.

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

Just because I don't care doesn't mean I don't understand.

Science is not only a disciple of reason but, also, one of romance and passion.

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

Many much-learned men have no intelligence.

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