广义相对论是所有现有物理理论中最美的。

Remember, if you ever need a helping hand, you'll find them at the end of each of your arms. As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.

Mining with integrity means leaving the land better than we found it.

书籍是最安静且最恒久的朋友。