体操是我做的事,而不是我是谁。
Gymnastics is what I do, not who I am.
农业的可持续性不是一种选择,而是我们星球未来的必需品。
"I don't want to be a hero. I just want to be a person who does the right thing."
国家是理性的行为体,它们寻求最大化相对权力,以确保在竞争性的国际体系中生存。
The best way to predict the future is to create it.
The historian walks a tightrope between fact and imagination.