The only fence against the world is a thorough knowledge of it.

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

Sustainability isn't a trend—it's a responsibility we owe to future generations.

我的信念是：坚持做自己，总会有人欣赏。

双重思想意味着在头脑中同时持有两种相互矛盾的信念，并接受它们两者。