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The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.

I am heartily rejoiced that my term is so near its close.

The great challenge of our time is to create a world order that is both just and sustainable.

States are rational actors that seek to maximize their relative power in order to ensure their survival in a competitive international system.

在數(shù)學中，你并不理解事物。你只是習慣了它們。

生活就是要冒險。如果你不冒險，你永遠不知道自己能做什么。