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

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

The highest result of education is tolerance.

When you know better you do better.

A cynic is a man who knows the price of everything, and the value of nothing.

Reading without reflecting is like eating without digesting.

Knowledge becomes evil if the aim be not virtuous.

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

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

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

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

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

Evil being the root of mystery, pain is the root of knowledge.

If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.

The white man is very clever. He came quietly and peaceably with his religion. We were amused at his foolishness and allowed him to stay. Now he has won our brothers, and our clan can no longer act like one. He has put a knife on the things that held us together and we have fallen apart.

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

I cannot live without books.

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

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

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.