那时我老得多，现在我比那时年轻了
I was so much older then, I'm younger than that now.
数学是理性的音乐。
凡事要有节制，一生便不会因不恰当的行为而蒙受羞耻。
To serve is beautiful, but only if it is done with joy and a whole heart and a free mind.
I have to be alone very often. I'd be quite happy if I spent from Saturday night until Monday morning alone in my apartment. That's how I refuel.
The study of Galois representations is a journey into the hidden symmetries of mathematics.