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166 itself for money, it is not, I think, among the black races that purchases of this kind are most extensively made, or that separate souls of a fine make fetch the highest price. This branch of the inquiry we shall have occasion also to follow out at some length, for in the worst instances of the selling of souls, we are apt to get, when we ask if the sale is valid, only Pyrrhon's answer —"None can know."

133. The fact is that slavery is not a political institution at all, but an inherent, natural, and eternal inheritance of a large portion of the human race—to whom, the more you give of their own free will, the more slaves they will make themselves. In common parlance, we idly confuse captivity with slavery, and are always thinking of the difference between pine-trunks (Ariel in the pine), and cowslip-bells ("in the cowslip-bell I lie"), or between carrying wood and drinking (Caliban's slavery and freedom), instead of noting the far more serious differences between Ariel and Caliban themselves, and the means by which, practically, til at difference may be brought about or diminished.