The key to survival is not just physical strength, but mental resilience.
You can't build a reputation on what you are going to do.
Writing is the only thing that, when I do it, I don't feel I should be doing something else.
发愤研究学问,常常忘记吃饭,一旦有所收获便又高兴地忘记了忧愁,连自己的渐趋衰老也没有感觉到。