Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

Dare to think for yourself.

Intelligence plus character-that is the goal of true education.

Reading without reflecting is like eating without digesting.

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

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

The first idea the child must acquire is that of the difference between good and evil.

Free the child's potential, and you will transform him into the world.

I like poems you can tack all over with a hammer and there are no hollow places.

Many much-learned men have no intelligence.

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.

Common sense is the collection of prejudices acquired by age eighteen.

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

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

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

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

Education is the kindling of a flame, not the filling of a vessel.

If you can't explain it simply, you don't understand it well enough.

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