If you can’t change it, change your mindset.
Never underestimate the power of persistence. Most people give up too soon.
El arte de la novela consiste en contar lo que no se puede contar.
In business, the competition will bite you if you keep running; if you stand still, they will swallow you.
购买股票的最佳时机是它们不受欢迎的时候。
The art of doing mathematics consists in finding that special case which contains all the germs of generality.