Pain is not always transformative; sometimes it just hurts.

文章贵在简洁，简洁则明了；文章贵在疏朗，疏朗则通畅。

数学的力量来自于它的抽象和概括能力，将具体问题转化为普遍真理。

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

艺术是对生活对我们所做之事的回应。

We are all walking around with an evolutionary user's manual in our heads, but most people don't realize it.

我们都有裂痕，那是光照进来的地方。