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

Industrialize or perish.

The only true wisdom is in knowing you know nothing.

That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.

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

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

I do not know how to teach philosophy without becoming a disturber of the peace.

The whole of science is nothing more than a refinement of everyday thinking.

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.

The great difficulty in education is to get experience out of ideas.

Courage, conviction and confidence.

Don't learn to do, but learn in doing.

Suddenly degrees aren't worth anything. Isn't that true? When I was a student, if you had a degree, you had a job. If you didn't have a job it's because you didn't want one. And I didn't want one, frankly.

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

Just because I don't care doesn't mean I don't understand.

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

I am a part of everything that I have read.

The books that the world calls immoral are books that show the world its own shame.

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

Opinion is the medium between knowledge and ignorance.

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