不好的事情会经常发生。
沾沾自喜时,应该约束反省;怒不可遏时,应该约束反省;怠倦懒惰时,应该约束反省;思想狂放时,应该省约束反。
The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all.