Mathematics is not a spectator sport. You have to do it to understand it.
数学不是一项观赏性运动。你必须亲自去做才能理解它。
Sometimes the smallest things take up the most room in your heart.
You don't have to be perfect to inspire others.
能源行业不仅仅是一个行业;它是全球发展的重要组成部分。
We are what we pretend to be, so we must be careful about what we pretend to be.