To every action there is always an equal and opposite or contrary, reaction

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

A little knowledge is a dangerous thing. So is a lot.

Human behavior flows from three main sources: desire, emotion, and knowledge

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

Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.

We could never learn to be brave and patient, if there were only joy in the world

If there were no bad people, there would be no good lawyers.

There is nothing more awful, insulting, and depressing than banality.

It isn't what we don't know that gives us trouble, it's what we know that ain't so.

Education is the best friend. An educated person is respected everywhere. Education beats the beauty and the youth.

A witty saying proves nothing.

A child miseducated is a child lost.

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

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

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

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.

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

Real learning comes about when the competitive spirit has ceased.

The only good is knowledge and the only evil is ignorance.

Books are for people who wish they were somewhere else.