勇气是战胜恐惧的力量。
A man who does not keep his word is no man at all.
The beauty of the world has two edges, one of laughter, one of anguish, cutting the heart asunder.
你的故事值得讲述。
黑洞防火墙的概念挑战了我们对量子力学和广义相对论的理解。