The world is full of people whose notion of a satisfactory future is, in fact, a return to the idealised past.

相信你的根基，但不要害怕拓展新枝。

The interplay between pure and applied mathematics is where true innovation happens.

我们越爱我们的朋友，就越少奉承他们；纯粹的爱表现在毫不包庇的态度。