"For when it is the good that is under consideration, and the ethical object is predominant, truth must be considered more in reference to art than science, if, that is, unity is to be preserved in the work generally."

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The past is a trail you leave behind, much like the wake of a speedboat.  That is, it's a vanishing trail temporarily showing you where you were.  The wake of a boat doesn't affect it's course-obviously it can't since it appears behind the boat.  So consider this image when you exclaim that your past is the reason you aren't moving forward.

— Wayne Dyer