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I read a story about a man who stood in one place his whole life, tied to the ground by a short rope. He always knew that with just a small effort, he could free himself. But he didn't try. The man told himself that there was no reason to move since the view was always the same in every direction and there was nothing worth looking at or doing on the other end of the rope.
Walking around is an excellent way of thinking. Most people only walk when they have to, or maybe when they are exercise fanatics. But most of the best ideas I ever had came to me while I was on a long walk.