No power and no treasure can outweigh the extension of our knowledge.

If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.

As we acquire more knowledge, things do not become more comprehensible but more mysterious.

Make it a rule never to give a child a book you would not read yourself.

My weapon is literature

Knowledge becomes evil if the aim be not virtuous.

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

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

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

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

Investigate, educate and organize.

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

A little knowledge that acts is worth infinitely more than much knowledge that is idle.

It is better to know how to learn than to know.

You can never be overdressed or overeducated.

The first principle is that you must not fool yourself and you are the easiest person to fool.

The secret of life is not enjoyment but education through experience.

Study without desire spoils the memory, and it retains nothing that it takes in.

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

Seek knowledge from the cradle to the grave.

Opinion is the medium between knowledge and ignorance.