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Experience is a grindstone; and it is lucky for us, if we can get brightened by it, and not ground.

Josh Billings (1972). “Uncle Sam's Uncle Josh: Or, Josh Billings on Practically Everything, Distilled from Josh's Rum and Tansy New England Wit by Donald Day”
Experience is a grindstone; and it is lucky for us, if we can get brightened by it, and not ground.