What two arguments does Greeley use for letting the seceding states?

Horace Greeley argues for allowing the seceding states to leave the Union primarily on the grounds of preserving peace and preventing further bloodshed in the Civil War. He believes that forcing these states back into the Union could lead to prolonged conflict and suffering. Additionally, Greeley emphasizes the principle of self-determination, suggesting that if the states genuinely wish to separate, it may be more honorable to let them go rather than impose unity through violence.