The true monument is not the building, but the memory it leaves behind.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的:它是关于理解的。
I have always been a stranger in this world, a visitor, a tourist.
宇宙充满了神奇的事物,耐心地等待着我们的智慧变得更加敏锐。