Any emotion, if it is sincere, is involuntary.
Quote by Mark Twain about emotions
Don't go around saying the world owes you a living. The...
Quote by Mark Twain about world, nothing
Everything human is pathetic. The secret source of humor...
Quote by Mark Twain about humor, sadness, joy, secret, human imperfections
Principles have no real force except when one is well-fed.
Quote by Mark Twain about principle, force, police, real estate