Maurice Maeterlinck's book, The Fourth Dimension, argues that Time is the fourth dimension. It doesn't exist in itself, but rather is always relative to the individual's idea of time. He used a curve to illustrate this theory. Standing on the Present, on the highest point of the curve, you can look back and see the Past, or look forward and see the Future, all in the same instant. Or if you stand off to one side of the curve, your eye wanders from one to the other w/out any distinction.
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