A mind needs books as a sword needs a whetstone if it is to keep its edge.
即使官场得意,步步高升,也要保持廉洁奉公的作风;即使退位之后,也要坚守节操,有始有终。
解释:向善就好像攀登山峰一样难,向恶就好像山石坍塌那样容易。