人们往往认为，现在的政客比过去的政客要糟糕得多。但我们往往忘记了过去的政客有多糟糕。

Sustainability is not an option anymore; it's a necessity for the future of agriculture.

The Langlands program is a vision of how mathematics could be unified in a single framework.

There is something profoundly mysterious about quantum mechanics that we still don't understand.

你的月亮无法发光是因为我。