Nothing exists but you. And you are but a thought. - Mark Twain

"A successful book is not made of what is in it, but what is left out of it."

"I was gratified to be able to answer promptly, and I did. I said I didn’t know."

"A big leather-bound volume makes an ideal razorstrap. A thing 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."

"Humor is mankind's greatest blessing."

"One should never use exclamation points in writing. It is like laughing at your own joke."