有时候，最艰难的战斗是在我们自己的脑海中进行的。
Sometimes, the hardest battles are fought within the confines of our own minds.
What matters in life is not what happens to you but what you remember and how you remember it.
亲兄弟不和睦，家产像瓜一样被切开；士大夫爱钱，不读书却追逐钱财。
I never take anything for granted.
有人问我什么是幸福，我回答说：不奢求非必需之物。
"Every discovery is a step closer to understanding the universe."
"To be a writer is to sit down at one's desk in the chill portion of every day, and to write; not waiting for the little jet of the blue flame of genius to start from the breastbone--just writing."