夜晚是一面伟大的镜子，但星星是它的倒影。
The night is a great mirror, but the stars are its reflections.
今天很残酷，明天更残酷，后天很美好。
事实是，我不知道我相信什么。我还在努力弄清楚。
In computational complexity, we are not just dealing with the limits of what we can compute, but also with the limits of what we can prove.