“But still the great public opinion of the free States was unmoved. It cried angrily, 'You're only making matters worse. It's very hard, but what can we do? It's none of our business. It's none of our business'. But when 1850 came, and theory was found to be fact, when the man who was angrily crying, 'It's none of my business, what have I to do with slavery?' suddenly felt the quivering, panting fugitive clinging to his knees — a wretched, forlorn, outcast, hunted man, guilty of no crime but color, and begging the succor that no honest man would refuse to a cur cowering on his threshold — then, as he stood aghast and heard Slavery thundering at his door, 'I am the law. Give me my prey! Give me my prey!”

he felt God knocking at his heart, 'Whoso doeth it unto the least of these my little ones, doeth it unto me'.
1850s, The Present Aspect of the Slavery Question (1859)