For beautiful eyes, look for the good in others; for beautiful lips, speak only words of kindness; and for poise, walk with the knowledge that you are never alone.
The essence of computational complexity is to understand the limits of what can be computed efficiently.
求知若饥，虚心若愚。
有时候我们对一些事情感到难过，但我们不愿意告诉别人我们为此感到难过。
The key to happiness is to have dreams. The key to success is to make your dreams come true.