More quotes by Mark Twain

"A successful book is not made of what is in it, but what is left out of it."
"Humor must not professedly teach and it must not professedly preach, but it must do both if it would live forever."
"The best way to cheer yourself is to try to cheer someone else up."
"All you need in this life is ignorance and confidence, and then success is sure."
"A man is never more truthful than when he acknowledges himself a liar."