“It is a fact that the enslavement of human beings has so far infused its insidious poison into the very hearts of the Southern people, that they have come to believe and declare the evil of slavery to be a good, and to require the power of Government to be exerted to maintain, extend, and perpetuate an institution that enables thousands to sell their own children, to be enslaved, with all their posterity, into hopeless bondage....”
The founder of New York City’s Cooper Union for the Advancement of Science and Art echoes the language and logic of the Emancipation Proclamation (as well as citing some Southern pro-slavery arguments to demonstrate their ridiculousness) in this open letter to President Lincoln. Cooper and the Cooper Union had long been advocates of abolition and both Lincoln and Frederick Douglass had famously lectured at the institution.