We have the choice to use the gift of our life to make the world a better place—or not to bother.

We are all alone, born alone, die alone, and—in spite of True Romance magazines—we shall all someday look back on our lives and see that, in spite of our company, we were alone the whole way.

The next green revolution must be both productive and environmentally responsible.

科学家是务实的人，他们的目标是实际的。他们不追求终极，而是追求接近。