"世界是一个舞台，但演员选得很糟糕。"
"The world is a stage, but the play is badly cast."
译文：认识是实践的开始，实践是认识的完成。圣人之学只有一个功夫，知和行不能分成两件事。
Human beings, viewed as behaving systems, are quite simple. The apparent complexity of our behavior over time is largely a reflection of the complexity of the environment in which we find ourselves.
