Success is a function of persistence and doggedness and the willingness to work hard for twenty-two minutes to make sense of something that most people would give up on after thirty seconds.

There is no limit on better. Talent is distributed unfairly， but there is no limit on how much we can improve what we start with.

小于给定数的素数个数是该数的一个函数。

——〈在广州农民运动讲习所第一届毕业礼演说〉，对讲习所学员发出警告，无法在中国发动阶级斗争，反之应该要用平和方法，以合作为诉求，1924年8月21日

过去总是紧张的，未来才是完美的。