科学不是形式逻辑——它需要思想的自由发挥，与其他任何创造性艺术一样。

We don't inherit the earth from our ancestors; we borrow it from our children. This principle guides every step we take.

世界不必担心我们政府中的军事野心。

Success is measured not just by profit, but by positive impact.

To be happy, it is necessary to forget as well as to remember.

我比自己的思维所能理解的更强大。

"We are all in the gutter, but some of us are looking at the stars."