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

Necessity is the mother of invention.

Intelligence plus character-that is the goal of true education.

I don't look on poetry as closed works. I feel they're going on all the time in my head and I occasionally snip off a length.

When you know better you do better.

I like poems you can tack all over with a hammer and there are no hollow places.

The only true wisdom is in knowing you know nothing.

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

No man's knowledge here can go beyond his experience.

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

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

Opinion is the medium between knowledge and ignorance.

God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.

A little knowledge is a dangerous thing. So is a lot.

There is no authority who decides what is a good idea.

The man who is fond of books is usually a man of lofty thought, and elevated opinions.

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

Investigate, educate and organize.

Reading is to the mind what exercise is to the body.

In mathematics you don't understand things. You just get used to them.

Educate the children and it won't be necessary to punish the men.