Physics is like sex: sure, it may give some practical results, but that's not why we do it.

Science is a way of thinking much more than it is a body of knowledge.

Knowledge becomes evil if the aim be not virtuous.

The knowledge of all things is possible

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

The great difficulty in education is to get experience out of ideas.

It isn't what we don't know that gives us trouble, it's what we know that ain't so.

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

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.

Education is our passport to the future, for tomorrow belongs to the people who prepare for it today.

Just because I don't care doesn't mean I don't understand.

Education is an ornament for the prosperous, a refuge for the unfortunate.

The progressive development of man is vitally dependent on invention.

All stable processes we shall predict. All unstable processes we shall control.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

The more I read, the more I acquire, the more certain I am that I know nothing.

What is now proved was once only imagined.

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

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

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

Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.