实践是最好的老师,但智者还能从其他的地方有所收获。
Experience is a dear teacher, but fools will learn at no other.
——《穷理查年鉴》(Poor Richard's Almanac) xwvAaAl7atP4CCSvJ/sqJAPNeM67b2QQBMoB7wlftKPqqh0ponaUiKkfZ0/mFsdb