In times of crisis, true leadership is measured by actions, not words.

美国能源的下一章不会通过固守旧剧本而书写，而是由那些愿意重写剧本的人书写。

任何牺牲基本自由以换取短暂安全的人，最后既得不到安全也得不到自由。

I don't need validation from anyone.

Every great novel is a journey into the unknown, both for the writer and the reader.

It is hard to read a newspaper or watch a television newscast without encountering someone who has come up with a new 'solution' to society's 'problems.'

You can't start the next chapter of your life if you keep re-reading the last one.

The beauty of mathematics lies in its ability to simplify complex phenomena.

When we are no longer able to change a situation, we are challenged to change ourselves.