数学中最深刻的思想往往来自最简单的问题。
The most profound ideas in mathematics often come from asking the simplest questions.
Between stimulus and response there is a space. In that space is our power to choose our response. In our response lies our growth and our freedom.
He had a way of looking at her that made her feel like the only person in the room.
In the end, that's what this election is about. Do we participate in a politics of cynicism or a politics of hope?
——杜先生晚年在香港，先生为中国抗战.赈灾慈善做出巨大贡献，晚年依旧气度过人，毁掉所有欠条。