The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.
Don't watch the clock; do what it does. Keep going.
The most important relationship you'll ever have is the one with yourself.
The most important thing in life is to learn how to give out love, and to let it come in.
I'm not running from my past; I'm running toward my future.
写作是面对过去的一种方式。