If "safeguards of individual liberty" do not have "any intrinsic worth", then neither does individual liberty. And if individual liberty has no intri… - Harry V. Jaffa

[S]lavery existed among the Americans largely because of the action of the crown. For the king to have been complicit in the importation of slaves into America and then to have attempted to use them in a war against their masters merited condemnation in its own right. In no way did such condemnation imply a justification of slavery itself.

This nation was founded," President Bush wrote, "upon the belief that every human being is endowed by our Creator with certain 'unalienable rights.' The President, in using the exact language of the Declaration of Independence, including the archaic "unalienable," has expressed the conviction that "the laws of nature and of nature's God" furnish the moral foundation of constitutional government. "President Jefferson's timeless principle," he wrote, "obligates us to pursue a civil society that will democratically embrace its essential moral duties...

And Lincoln pointed out that this argument—which the Court applied to the territories—could also equally well be applied to the states, so that the prospect of slavery becoming national, not only through the spread into the new territories but in the spread to the states, was very great. This was Lincoln’s argument.