Water, like religion and ideology, has the power to move millions. Since the very birth of human civilization, people have moved to settle close to it. People move when there is too little of it, when there is too much of it. People journey down it. People write, sing and dance about it. People fight over it. And all people, everywhere and every day, need it.

All the water that will ever be is, right now,   National Geographic, October 1993