The key to success in computer science is not just about writing code, but understanding the underlying principles and theories that make it work.

The challenge of art is to make the invisible visible.

计算理论的美在于其抽象和概括的能力，将具体问题转化为通用解决方案。

I keep thinking about this river somewhere, with the water moving really fast. And these two people in the water, trying to hold onto each other, holding on as hard as they can, but in the end it’s just too much. The current’s too strong. They’ve got to let go, drift apart.

注释：如果对小的功劳不加以奖赏，那么就难以建立大的功勋；如果对小的怨恨不能宽容赦免，那么大的怨恨就必然会产生。