Many much-learned men have no intelligence.

The books that the world calls immoral are books that show the world its own shame.

All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.

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

Liberty without Learning is always in peril and Learning without Liberty is always in vain.

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

Investigate, educate and organize.

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

The task of a writer is not to solve the problem but to state the problem correctly.

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

Dare to think for yourself.

I cannot live without books.

A thought is an idea in transit.

The whole of science is nothing more than a refinement of everyday thinking.

Never help a child with a task at which he feels he can succeed.

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

Courage, conviction and confidence.

Free the child's potential, and you will transform him into the world.

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

Learning never exhausts the mind.

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.