The highest endeavor of the mind, and the highest virtue, is to understand things by intuition.
Success is not final, failure is not fatal: it is the courage to continue that counts.
你必须投入时间,因为总有你可以改进的地方。
身体劳累而不休息,就会疲困;精力使用过度而不止歇,就会衰竭。