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

Writers are the engineers of the soul.

穷人常常被迫做出没有人应该做出的选择。

当你失败时，你会学到东西。当你成功时，你会学到更多。

70岁，我才刚刚开始。等着瞧吧。