"Harlan's dissenting opinion in Plessy, that the Constitution was colorblind, and that it did not countenance different and unequal classes of citizens, was based upon a belief in the truth of the principle of equality in which the founders and Lincoln had so profoundly believed. But this belief had been buried by progressivism, and has not been resurrected, except by the intellectual heirs of Leo Strauss. On intellectual grounds, it has never been refuted, and ought never to have been abandoned. There is not now, and never has been any such difference between one human being and another human being, or whatever race or color, such that one is by nature the ruler of the other, as any human being is by nature the ruler of any dog or any horse. For this reason, legitimate political authority can arise only by the consent of the governed, and consent can never be given for any reason other than the equal protection of the rights of the governed. Hence equal protection is the foundation of all constitutionalism, even apart from its specific inclusion in the Constitution itself. For more reasons than one, Justice Harlan's dissenting opinion ought to have been the opinion of the Court in 1896; even more ought it to have been the opinion of the Court in 1954. As Professor Edward J. Erler has demonstrated in the pages of the Claremont Review of Books, the principle of equal protection has never become the opinion of the Supreme Court of the United States, nor has it been favored in the writings of conservative jurists."