More quotes by Mark Twain

"If you pick up a starving dog and make him prosperous he will not bite you. This is the principal difference between a dog and man."
"Wrinkles should merely indicate where the smiles have been."
"All you need in this life is ignorance and confidence, and then success is sure."
"Education: that which reveals to the wise, and conceals from the stupid, the vast limits of their knowledge."
"Never put off till tomorrow what may be done day after tomorrow just as well."