The only limit to our realization of tomorrow is our doubts of today.
It is error only, and not truth, that shrinks from inquiry.
Progress requires both courage and humility.
韧性是我们在挑战面前继续前进的动力。
The best thing about success is knowing that your work has paid off.
有时最简单的问题会引出最深奥的理论。
你给予的越多,得到的就越多。