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For whatever may be the case, with regard to all kinds of vice and virtue, it is certain, that rights, and obligations, and property, admit of no such insensible gradation, but that a man either has a full and perfect property, or none at all; and is either entirely obliged to perform any action, or lies under no manner of obligation. To continue the experiment, I change anew the relation of ideas, and suppose the vice to belong to myself.