Those who fail to learn the lessons of history are doomed to repeat them.
The progressive development of man is vitally dependent on invention.
Learning never exhausts the mind.
In mathematics you don't understand things. You just get used to them.
There is nothing more awful, insulting, and depressing than banality.
Human behavior flows from three main sources: desire, emotion, and knowledge
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.
It is what you read when you don't have to that determines what you will be when you can't help it.
No power and no treasure can outweigh the extension of our knowledge.
The real solution lies in a world in which charity will have become unnecessary.
The highest result of education is tolerance.
The great difficulty in education is to get experience out of ideas.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
Evil being the root of mystery, pain is the root of knowledge.
Knowledge becomes evil if the aim be not virtuous.
Education is a system of imposed ignorance.
Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.
Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.
Industrialize or perish.
If help and salvation are to come, they can only come from the children, for the children are the makers of men.
It is possible to fly without motors, but not without knowledge and skill.