The internal limitation Locke suggested is of more doubtful value. Government, he says, in substance, is a trustee and trustees abuse their power; let us therefore divide it as to parts and persons that the temptation to usurp may be diminished. There is a long history to this doctrine in its more obvious form, and it is a lamentable history. It tied men down to a tyrannous classification which had no root in the material it was supposed to distinguish. Montesquieu took it for the root of liberty; Blackstone, who should have known better, repeated the pious phrases of the Frenchman; and they went in company to America to persuade Madison and the Supreme Court of the United States that only the separation of powers can prevent the approach of tyranny. The facts do not bear out such assumption. The division of powers means in the event not less than their confusion. None can differentiate between the judge's declaration of law and his making of it.[6] Every government department is compelled to legislate, and, often enough, to undertake judicial functions. The American history of the separation of powers has most largely been an attempt to bridge them; and all that has been gained is to drive the best talent, save on rare occasion, from its public life. In France the separation of powers meant, until recent times, the excessive subordination of the judiciary to the cabinet. Nor must we forget, as Locke should have remembered, the plain lesson of the Cromwellian constitutional experiments. That the dispersion of power is one of the great needs of the modern State at no point justifies the rigid categories into which Locke sought its division.[7] [Footnote 6: Cf. Mr. Justice Holmes' remarks in _Jensen_ v. _Southern Pacific_, 244 U.S. 221.] [Footnote 7: Cf. my _Authority in the Modern State_, pp. 70 f.]