文明的伟大进步，无论是在建筑、绘画、科学、文学、工业还是农业领域，都从未来自中央集权的政府。

Your time is limited, so don't waste it living someone else's life.

The challenge of leadership is to be strong, but not rude; be kind, but not weak; be bold, but not bully; be thoughtful, but not lazy; be humble, but not timid; be proud, but not arrogant; have humor, but without folly.