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The mind does some of its best wandering when the body’s moving forward. This is true on a bike, or on foot, or on a plane, train, or in an automobile, anything. There’s just something about steady onward motion that’s uniquely conducive to shedding any hang-ups and inviting real mental latitude. And, it seems, conversely, the mind is best at plunging forward, at submitting itself to something and following a fixed path, when the body is stationary. In a quiet room between sixty-eight and seventy-four degrees, wearing clothes that are snug but comfortable, sitting upright. Free of any distraction. Unlike out here, the room has no exigencies, so the mind makes up its own. Work, it says. Or watch, read. Dedicate me to something specific. A mind narrows in on that thing then moves resolutely toward it, doing its best to ward off anything that might interrupt or alter its course; thought is a train, consciousness a stream…
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A.D. Aliwat (In Limbo)