现在你们不是国人的勇士,怎么能既学好学业又学好射箭呢? 
Failure is instructive. The person who really thinks learns quite as much from his failures as from his successes.
Every piece of plastic ever made still exists somewhere - that's not just a fact, it's our responsibility.
心灵自有其天地,能把天堂变地狱,把地狱变天堂。