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) kBSS8FdEZI+bPkPQ5w9OcWo+qe2J2rHMsHFrm3I1XqqolZ8KVk1afv4112DozF3W