What we know is a drop, what we don't know is an ocean.

Civilization is a race between disaster and education.

The only true wisdom is in knowing you know nothing.

My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.

Just when I thought there wasn't room enough for another thought in my head, I had this great idea.

If one cannot enjoy reading a book over and over again, there is no use in reading it at all.

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

Most people have never learned that one of the main aims in life is to enjoy it.

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

Make it a rule never to give a child a book you would not read yourself.

Knowing others is wisdom, knowing yourself is Enlightenment.

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

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

The first principle is that you must not fool yourself and you are the easiest person to fool.

Language is courage: the ability to conceive a thought, to speak it, and by doing so to make it true.

Study without desire spoils the memory, and it retains nothing that it takes in.

An investment in knowledge pays the best interest.

Books are as useful to a stupid person as a mirror is useful to a blind person.

Real learning comes about when the competitive spirit has ceased.

Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.

The highest activity a human being can attain is learning for understanding, because to understand is to be free.