Coal miners are the unsung heroes of America's industrial strength.
用努力证明自己,而不是用言语。
我认为冠军的定义不在于他们的胜利,而在于他们跌倒后如何重新站起来。
Collaboration beats competition when it comes to long-term progress.
A forest without wildlife is like a symphony without music.
The only thing we can know is that we know nothing and that is the highest flight of human wisdom.