It would be tedious to follow the debates through in detail. Necessarily the later arguments were mainly a repetition of those made in the earlier speeches. Thee was a marked falling off in the good temper and mutual courtesy of the combatants in the later stages of the contest. The abiding question to which the argument constantly recurred was that of negro slavery, as to which Lincoln was darkly oracular and Douglas was resolutely evasive. Lincoln again and again pressed Douglas to say whether he regarded slavery as wrong. Douglas persistently declined the question on the pleat that it was one wholly foreign to national politics. Each State had a right to decide for itself; and that right had been delegated to the Territories by the Compromise act of 1850 and again by the Kansas-Nebraska act of 1854. "I look forward," he said, "to a time when each State shall be allowed to do as it pleases. If it chooses to keep slavery forever, it is not my business, but its own; if it chooses to abolish slavery, it is its own business, not mine. I care more for the great principle of self-government, the right of the people to rule, then I do for all the negroes in Christendom. I would not endanger the perpetuity of this Union, I would not blot out the great inalienable rights of the white man, for all the negroes that ever existed." Lincoln persistently pressed his argument: "When Douglas says he don't care whether slaver is voted up or voted down, he can thus argue logically if he don't see anything wrong in it; but he cannot say so logically if he admits that slavery is wrong. He cannot say that the would as soon see a wrong voted up as voted down. When he says that slave property and horse and hog property are alike to be allowed to go into the Territories upon the principle of equality, he is reasoning truly if there is no difference between them and property; but if the one is property held rightfully and the other is wrong, then there is no equality between the right and the wrong. * * * That is the real issue. That is the issue that will continue in this country when these poor tongues of Judge Douglas and myself shall be silent. It is the eternal struggle between these two principles that have stood face to face from the beginning of time and will ever continue to struggle. The one is the common right of humanity and the other the divine right of kings. It is the same principle in whatever shape it develops. It is the same spirit that says, 'you work and toil and earn bread, and I'll eat it.' No matter in what shape it comes, whether from the mouth of a king who seeks to bestride the people of his own nation and live by the fruit of their labor or from one race of men as an apology for enslaving another race, it is the same tyrannical principle."