Program testing can be used to show the presence of bugs, but never to show their absence!

最好的学习方法就是实践。

I always try to find a way to win, even when I'm not playing my best.

"Imagination is not only the uniquely human capacity to envision that which is not, and therefore the fount of all invention and innovation. In its arguably most transformative and revelatory capacity, it is the power that enables us to empathize with humans whose experiences we have never shared."