The moment you give up is the moment you let someone else win.
In the world of physics, we often find that the simplest questions are the hardest to answer.
The only way to learn mathematics is to do mathematics.
The key to successful investing is to have a strong understanding of the fundamentals.
一个作家是一个对现实世界不满意的人,他想要改变它,改善它,让它变得更美丽,更公正,更宜居。
La memoria es un perro que se muerde la cola.