"Picking up a tell - a hint that a player unknowingly gives that reveals the strength of his hand - often means the difference between winning and losing a big pot." -- Daniel Negreanu
"Strength does not come from winning. Your struggles develop your strengths. When you go through hardships and decide not to surrender, that is strength." -- Arnold Schwarzenegger
"To win a bit of money, make your opponent think your hand is stronger than it is. To win a lot of money, make him think your hand is weaker than it is." -- Josh Avery
"Protect your hand when you're confident you're in the lead. Don't be greedy and try to milk your opponent for a few more chips when the pot is already large." -- Daniel Negreanu
“Poker reveals to the frank observer something else of import. It will teach him about his own nature. Many bad players do not improve because they cannot bear self-knowledge.”
David Mamet