A thought is an idea in transit.

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

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

It is beyond a doubt that all our knowledge begins with experience.

Learning never exhausts the mind.

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

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

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

I decided to teach because I think that any person who studies philosophy has to be involved actively.

A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad.

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

I cannot live without books.

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

Free the child's potential, and you will transform him into the world.

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.

With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.

You can never be overdressed or overeducated.

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

The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.

You can never learn less, you can only learn more.

Better know nothing than half-know many things.