困难之中蕴藏着机会。

广义相对论是所有现有物理理论中最美的。

The art of progress is to preserve order amid change and to preserve change amid order.

Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.

The true test of our work comes decades later, when it's still being loved and used.

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

城市就像一张巨大的重写羊皮纸，几个世纪以来被反复书写和重写。