I spoke, Sir, of the Ordinance of 1787,[29] which prohibits slavery, in all future times, northwest of the Ohio, as a measure of great wisdom and foresight, and one which had been attended with highly beneficial and permanent consequences. I supposed that on this point no two gentlemen in the Senate could entertain different opinions. But the simple expression of this sentiment has led the gentleman not only into a labored defence of slavery, in the abstract, and on principle, but also into a warm accusation against me, as having attacked the system of domestic slavery now existing in the Southern States. For all this, there was not the slightest foundation in anything said or intimated by me. I did not utter a single word which any ingenuity could torture into an attack on the slavery of the South. I said, only, that it was highly wise and useful, in legislating for the Northwestern country while it was yet a wilderness, to prohibit the introduction of slaves; and I added that I presumed there was no reflecting and intelligent person, in the neighboring State of Kentucky, who would doubt that, if the same prohibition had been extended, at the same early period, over that commonwealth, her strength and population would, at this day, have been far greater than they are. If these opinions be thought doubtful, they are nevertheless, I trust, neither extraordinary nor disrespectful. They attack nobody and menace nobody. And yet, Sir, the gentleman's optics have discovered, even in the mere expression of this sentiment, what he calls the very spirit of the Missouri question! He represents me as making an onset on the whole South, and manifesting a spirit which would interfere with, and disturb, their domestic condition! [Sidenote: Slavery a matter of domestic policy, left with the States.] [Sidenote: But a great evil.]