More quotes by Mark Twain

"Some people get an education without going to college. The rest get it after they get out."
"The secret source of humor is not joy but sorrow; there is no humor in Heaven."
"It's not the size of the dog in the fight, it's the size of the fight in the dog."
"All you need in this life is ignorance and confidence, and then success is sure."
"Sanity and happiness are an impossible combination."