做数学就是同时参与创造和发现的行为。
To do mathematics is to engage in an act of creation and discovery simultaneously.
The more you give, the more you receive.
Given the choice between the experience of pain and nothing, I would choose pain.
信念不是被动等待,而是主动的想象和感受。
Loneliness is not a lack of company, but a lack of purpose.