朗兰兹纲领是对我们理解数学真理本质的挑战。
The Langlands program is a challenge to our understanding of the nature of mathematical truth.
The degree of slowness is directly proportional to the intensity of memory. The degree of speed is directly proportional to the intensity of forgetting.
过去是一个陌生的国度；那里的人们做事方式不同。