What is now proved was once only imagined.

My weapon is literature

Real learning comes about when the competitive spirit has ceased.

Books are for people who wish they were somewhere else.

Seek knowledge from the cradle to the grave.

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

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.

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

There is no authority who decides what is a good idea.

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

It is what you read when you don't have to that determines what you will be when you can't help it.

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

I am indebted to my father for living, but to my teacher for living well.

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

Opinion is the medium between knowledge and ignorance.

The ability to observe without evaluating is the highest form of intelligence.

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

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

Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.

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

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