It is hard to read a newspaper or watch a television newscast without encountering someone who has come up with a new 'solution' to society's 'problems.'

Sustainable practices aren't a cost—they're an investment in our collective future.

人不能独自生存。

"The essence of mathematics lies in its freedom."

还有许多东西是值得牺牲的，还有这么多的历史等着我们去创造。