Confucius reminds us of our limitless possibilities, while Laozi reminds us of our limitations. Laozi isn't fooled by the high-sounding rhetoric that we all put out. He feels that all the righteousness in the world can turn in an instant to hypocrisy. That being the case, the best thing is simply to act in harmony with nature.
孔子提醒你人的無限性，老子卻提醒人為的有限性，他看穿了目的論，認為所有人為仁義都可能轉眼間成為假仁義，不如回歸自然。