This exact quotation has not been found in any of the writings of Thomas Jefferson. It bears a very vague resemblance to Jefferson's comment in a prospectus for his translation of Destutt de Tracy's Treatise on Political Economy: "To take from one, because it is thought that his own industry and that of his fathers has acquired too much, in order to spare to others, who, or whose fathers have not exercised equal industry and skill, is to violate arbitrarily the first principle of association, ‘the guarantee to every one of a free exercise of his industry, & the fruits acquired by it.'" Doesn't have anything to do with a democracy, but it's along the same lines. Kind of.