If you want to be fully convinced of the abominations of slavery, go on a southern plantation, and call yourself a negro trader. Then there will be no concealment; and you will see and hear things that will seem to you impossible among human beings with immortal souls.
When he was twenty-three or twenty-four my father began to learn German and read philosophy in his spare hours, which did not look as though he were destined to remain long on board ship!