Common sense is the collection of prejudices acquired by age eighteen.

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

Any sufficiently advanced technology is indistinguishable from magic.

There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent.

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

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

When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my mind.

It is possible to fly without motors, but not without knowledge and skill.

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

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

In order to stave off covetouness, greed, and spite, citizens world over must be educated.

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

If the facts don't fit the theory, change the facts.

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

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

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

I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion

The progressive development of man is vitally dependent on invention.

What is now proved was once only imagined.

The highest result of education is tolerance.

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.