There is a vestige of decency, a sense of shame, that does much to curb and check those outbreaks of atrocious cruelty so commonly enacted upon the plantation. He is a desperate slaveholder, who will shock the humanity of his non-slaveholding neighbors with the cries of his lacerated slave.
 Frederick Douglass, Narrative of the Life of Frederick Douglass, an American Slave (1845). copy citation

Context

“I had resided but a short time in Baltimore before I observed a marked difference, in the treatment of slaves, from that which I had witnessed in the country. A city slave is almost a freeman, compared with a slave on the plantation. He is much better fed and clothed, and enjoys privileges altogether unknown to the slave on the plantation. There is a vestige of decency, a sense of shame, that does much to curb and check those outbreaks of atrocious cruelty so commonly enacted upon the plantation. He is a desperate slaveholder, who will shock the humanity of his non-slaveholding neighbors with the cries of his lacerated slave. Few are willing to incur the odium attaching to the reputation of being a cruel master; and above all things, they would not be known as not giving a slave enough to eat. Every city slaveholder is anxious to have it known of him, that he feeds his slaves well; and it is due to them to say, that most of them do give their slaves enough to eat.” source