A Chinese tale tells of some men sent to harm a young girl who, upon seeing her beauty, become her protectors rather than her violators. That’s how I felt seeing the Earth for the first time. I could not help but love and cherish her.

The regret on our side is, they used to say years ago, we are reading about you in science class. Now they say, we are reading about you in history class.

Science cuts two ways, of course; its products can be used for both good and evil. But there’s no turning back from science. The early warnings about technological dangers also come from science.