Ages when custom is unsettled are necessarily ages of prophecy. The moralist cannot teach what is revealed; he must reveal what can be taught. He has to seek insight rather than to preach.
风俗不稳定的时代必然是预言的时代。道德家不能传授所揭示的东西;他必须揭示什么是可以教的。他必须寻求真知灼见,而不是说教。