实现明天理想的唯一限制是我们今天的疑虑。
The thing about fantasy is that it allows you to create a world that is completely different from our own, and yet, it can still reflect the truths of our world.
We are at a unique stage in our history. Never before have we had such an awareness of what we are doing to the planet, and never before have we had the power to do something about it.
Mathematics is not a spectator sport.
I'm not a teacher, I'm a student.