More quotes by Mark Twain

"I was gratified to be able to answer promptly, and I did. I said I didn’t know."
"A successful book is not made of what is in it, but what is left out of it."
"Education: that which reveals to the wise, and conceals from the stupid, the vast limits of their knowledge."
"Lord save us all from old age and broken health and a hope tree that has lost the faculty of putting out blossoms."
"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."