Man is the only animal that blushes -- or needs to.
People are much more willing to lend you books than bookcases.
The man who does not read books has no advantage over the man that can not read them.
My books are water; those of the great geniuses are wine -- everybody drinks water.
A classic is something that everybody wants to have read and nobody wants to read.
A big leather-bound volume makes an ideal razor strap. A thin book is useful to stick under a table with a broken caster to steady it. A large, flat atlas can be used to cover a window with a broken pane. And a thick, old-fashioned heavy book with a clasp is the finest thing in the world to throw at a noisy cat.
There comes a time in every rightly constructed boy's life when he has a raging desire to go somewhere and dig for hidden treasure.
Of all God's creatures there is only one that cannot be made the slave of the lash. That one is the cat. If man could be crossed with a cat it would improve man, but it would deteriorate the cat.
Put all your eggs in one basket and then watch that basket.
Education is the path from cocky ignorance to miserable uncertainty.
To arrive at a just estimate of a renowned man's character one must judge it by the standards of his time, not ours.
The best way to cheer yourself up is to try to cheer somebody else up.
Civilization is a limitless multiplication of unnecessary necessities.
I don't like to commit myself about heaven and hell -- you see, I have friends in both places.
If to be interesting is to be uncommonplace, it is becoming a question, with me, if there are any commonplace people.