In the memorable discussion over this issue, involving the country as well as Congress, two sorts of argumentation were heard in favor of the suit of Missouri. The genuine pro-slavery men urged the sacredness of property as such, and the special sacredness of property-right in slaves as tacitly guaranteed by the Constitution. They also made much of the third article of the Louisiana purchase treaty. This read as follows: "The inhabitants of the ceded territory shall be incorporated in the Union of the United States and admitted as soon as possible, according to the principles of the Federal Constitution, to the enjoyment of all the rights, advantages, and immunities of citizens of the United States; and in the meantime they shall be maintained and protected in the free enjoyment of their liberty, property, and the religion which they profess." There were with these, men who acted from mere policy, thinking it best to admit the slave State because of the difficulty and also the danger to the Union of suppressing slavery there. They appealed as well to the sacred compromises in the Constitution, meaning the permission at first to import slaves, the three-fifths rule for slave representation in Congress, and the fugitive slave clause. They spoke much of the necessity of preserving the balance of power within the Union, and of Congress's inaction as to slavery in the Louisiana purchase hitherto, and also in Florida. These arguments won many professed foes of slavery, as Jefferson, Madison, Monroe and Quincy Adams. In all Congress Clay was the most earnest pleader for the compromise. To all these arguments the unbending friends of free soil replied that property right was subordinate to the national good, and that Congress had full power over territorial institutions and should never have permitted slavery to curse the domain in question. If it had committed error in the past, that could not excuse continuance in error. The terms of the Louisiana purchase, it was further urged, could not, even if they had been meant to do so, which was not true, detract from this sovereign power. It was pointed out that in every case in which a State had been admitted thus far, Congress had prescribed conditions. It was boldly said, still further, that if slavery threatened disunion unless allowed its way, it ought all the more to be denied its way.