未来不是固定的；它是我们可以用知识和行动塑造的东西。
The future is not fixed; it is something we can shape with our knowledge and actions.
In times of crisis, true leadership is measured by actions, not words.
You think you know when you can learn, are more sure when you can write, even more when you can teach, but certain when you can program.
The mind evolves to meet the challenges of existence.
我对扮演英雄不感兴趣。我对扮演人类感兴趣。
We are made of star stuff.
If time travel is possible, where are the tourists from the future?