Seek knowledge from the cradle to the grave.

In order to stave off covetouness, greed, and spite, citizens world over must be educated.

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

Necessity is the mother of invention.

Investigate, educate and organize.

Real learning comes about when the competitive spirit has ceased.

Learning gives creativity, Creativity leads to thinking, Thinking provides knowledge, Knowledge makes you great.

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

I am a part of everything that I have read.

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

The most important part of teaching is to teach what it is to know.

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

Books are for people who wish they were somewhere else.

What is freedom of expression? Without the freedom to offend, it ceases to exist.

Industrialize or perish.

Dare to think for yourself.

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

Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.

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

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

Learning never exhausts the mind.