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

The deepest sin against the human mind is to believe things without evidence.

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

The secret of life is not enjoyment but education through experience.

God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.

Those who fail to learn the lessons of history are doomed to repeat them.

The fullness of knowledge only comes through the awareness of ignorance.

With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.

Industrialize or perish.

If I have seen further it is by standing on the shoulders of Giants.

An investment in knowledge pays the best interest.

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

A child miseducated is a child lost.

The reading of all good books is like conversation with the finest men of past centuries.

You can never learn less, you can only learn more.

Real knowledge is to know the extent of one's ignorance.

Education is the most powerful weapon which you can use to change the world.

The white man is very clever. He came quietly and peaceably with his religion. We were amused at his foolishness and allowed him to stay. Now he has won our brothers, and our clan can no longer act like one. He has put a knife on the things that held us together and we have fallen apart.

Don't learn to do, but learn in doing.

There is no authority who decides what is a good idea.

It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.