The world is a fine place and worth the fighting for.
这个世界是个美好的地方，值得为之奋斗。
密码学的目标是使破解系统的成本超过受保护信息的价值。
What matters in life is not what happens to you but what you remember and how you remember it.
If you lose or forget to bring a cable，adapter or charger，check with your hotel. Most hotels now have a drawer full of cables，adapters and chargers others have left behind，and probably have the one you are missing. You can often claim it after borrowing it.
The hour of departure has arrived，and we go our separate ways，I to die，and you to live。Which of these two is better only God knows.
We are all walking libraries of forgotten books.
在森林的静谧中，人们发现了道的运动。