夜晚是一座伟大的城市，但星星是它的灯光。
The night is a great cathedral, but the stars are its windows.
"Children's literature is the foundation for a lifetime of reading."
The peculiar evil of silencing the expression of an opinion is that it is robbing the human race； posterity as well as the existing generation； those who dissent from the opinion， still more than those who hold it.
Tell me a little bit about what's going on in your life
NP完全性的概念为理解计算问题的复杂性提供了一个强大的工具。
We need to think with a global perspective and act with local solutions.