剑鞘保护剑的锋利，自己却满足於它自己的迟钝。

Overfishing is a debt our children will pay if we don’t act now.

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 more uncertain and insecure I feel, the more I cling to the idea of painting.

爱是自由的；承诺永远爱同一个女人，与承诺永远相信同一个信条一样荒谬。