I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

The greatest threat to democracy is the erosion of trust in institutions.

如果你想成功，就要和那些能挑战你的人在一起。

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

真正的文学没有边界，无论是地理上的还是时间上的。