The highest purpose is to have no purpose at all. This puts one in accord with nature in her manner of operation.
译文:高兴欣喜之时不要轻易向其他人许诺,生气愤怒之时不要和其他人争执说话。赏析:人在情绪波动之时,做出的任何抉择往往都是错误的。人只有在心平气和之下,才能非常理性地做出选择。