让你难过的事情,有一天,你一定会笑着说出来。
The way positive reinforcement is carried out is more important than the amount.
If you want to understand function, study structure.
好人就是无论他过去在道德上多么不值得,现在正在变得更好的人。
Every failed experiment is a step closer to success, as long as you learn from it.