Abraham Lincoln questions the legitimacy of states seceding from the Union based on claims of original sovereignty. He challenges the constitutional and moral basis for secession, asserting the primacy of national unity over state autonomy in preserving the integrity of the nation. Lincoln’s quote reflects his commitment to the Union and constitutional governance, opposing secession as a threat to democratic principles and national unity. It underscores his defense of federal authority and the rule of law in maintaining a cohesive and stable nation.