Consciousness serves the organism's need to interact effectively with its world.
The true genius shudders at incompleteness — and usually prefers silence to saying something which is not everything it ought to be.
Happiness is not the belief that we don't need to change; it is the realization that we can.
富贵不能使我的思想迷乱,贫贱不能使我改变志向,威武不能使我节操屈服,这样的人才称得上大丈夫。
The truth is often hidden in the shadows, and it takes courage to find it.