“The third and last duty of the sovereign....is that of erecting and maintaining those public institutions and those public works, which though they may be in the highest degree advantageous to a great society, are, however, of such a nature, that the profit could never repay the expense to any individual, or small number of individuals; and which it, therefore, cannot be expected that any individual, or small number of individuals, should erect or maintain.”
&#160;“主权国家的第三也是最终职责……是建立和维持公共机构和公共工程，作为伟大社会最高等级的优势所在，这些机构和工程仍摆脱不了以下性质：利润永远不足以抵消某个或某少数个人的支出；因此它们不可能由某个或某少数个人来建立和维持。”