I cannot live without books.

Books are as useful to a stupid person as a mirror is useful to a blind person.

If one cannot enjoy reading a book over and over again, there is no use in reading it at all.

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

Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.

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

A witty saying proves nothing.

A thought is an idea in transit.

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

If the facts don't fit the theory, change the facts.

There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent.

Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.

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

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

To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.

Liberty without Learning is always in peril and Learning without Liberty is always in vain.

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

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

If you want the present to be different from the past, study the past.

I decided to teach because I think that any person who studies philosophy has to be involved actively.

I think that kids have a greater capacity for processing things than we give them credit for.