世界总是危险的，人们总是有好有坏。
"The world is always going to be dangerous, and people are always going to be good and bad."
The development of efficient algorithms is as much an art as it is a science.
最好的领导者是那些听比说更多的人。
Immediately pay what you owe to vendors， workers， contractors. They will go out of their way to work with you first next time.
The interplay between local and global phenomena is a recurring theme in number theory.
我不害怕崩溃，因为我知道我总能重新振作。