Movement is the essence of life.

The very idea of "managing" a forest in the first place is oxymoronic, because a forest is an ecosystem that is by definition self-managing.

I do not yet want to form a hypothesis to test, because as soon as you make a hypothesis, you become prejudiced. Your mind slides into a groove, and once it is in that groove, has difficulty noticing anything outside of it. During this time, my sense must be sharp; that is the main thing - to be sharp, yet open.

Movement is the essence of life.

Barry L. Jacobs and colleagues from the neuroscience program at Princeton University showed that when mice ran every day on an exercise wheel, they developed more brain cells and they learned faster than sedentary controls. I believe in mice.

There is nothing quite so gentle, deep, and irrational as running--and nothing quite so savage, so wild.

Running is perhaps the most fundamental of all sports, and it is economically the least costly to perform. As a consequence, it is the most democratic and most competitive of all sports because individual merit can prevail despite economic equality. It is a sport for everyone, the whole world over.