Mathematical intuition is like a muscle - it grows stronger with exercise.

The stranger is an element of the group itself, not unlike the poor and sundry 'inner enemies'—an element whose membership within the group involves both being outside it and confronting it.

团结不是慈善，而是对我们共同人性的认可。

我把它当作每天都是一个新的挑战，我必须每天变得更好。