Do just once what others say you can't do, and you will never pay attention to their limitations again.

Understanding black holes is understanding the fabric of the universe itself.

"To write is to dance with shadows."

I've learned that you shouldn't go through life with a catcher's mitt on both hands; you need to be able to throw something back.

如果你甘于平庸，那么你可能会一生都不快乐。