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

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

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

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

The highest activity a human being can attain is learning for understanding, because to understand is to be free.

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

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

You can never be overdressed or overeducated.

Don't worry that children never listen to you; worry that they are always watching you.

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

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

I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.

When you know better you do better.

Education is the best friend. An educated person is respected everywhere. Education beats the beauty and the youth.

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

An investment in knowledge pays the best interest.

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

Education is a system of imposed ignorance.

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

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

Books are for people who wish they were somewhere else.