Of all our planet's activities — geological movements, the reproduction and decay of biota, and even the disruptive propensities of certain species (elephants and humans come to mind) — no force is greater than the hydrologic cycle.


Rivergods: Exploring the World's Great Wild Rivers, Introduction (p. xiii), Sierra Club Books. 1958


Of all our planet's activities — geological movements, the reproduction and decay of biota, and even the disruptive propensities of certain species ...

Of all our planet's activities — geological movements, the reproduction and decay of biota, and even the disruptive propensities of certain species ...

Of all our planet's activities — geological movements, the reproduction and decay of biota, and even the disruptive propensities of certain species ...

Of all our planet's activities — geological movements, the reproduction and decay of biota, and even the disruptive propensities of certain species ...