It ain't the roads we take; it's what's inside of us that makes us turn out the way we do.
不是我们选择的道路，而是我们内心的东西决定了我们的命运。
Not for the sake of our health, though it's often presented that way, but because it's an escape from the human anthill. It's an escape from our own competition, and our own dramas. And that's why ween joy looking at glaciers and oceans, and contemplating the Earth from outside its perimeters, etc. We like to feel in contact with something that is non-human, and that is so deeply important to us.
Leadership means making tough decisions today that will benefit future generations.