Such a decision is all that slavery now lacks of being alike lawful in all the States. Welcome, or unwelcome, such decision is probably coming, and will soon be upon us, unless the power of the present political dynasty shall be met and overthrown. We shall lie down pleasantly dreaming that the people of Missouri are on the verge of making their State free, and we shall awake to the reality instead, that the Supreme Court has made Illinois a slave State. To meet and overthrow the power of that dynasty is the work now before all those who would prevent that consummation. This is what we have to do. How can we best do it?

The House Divided speech (1858)