John Thompson (b. 1812) was an escaped slave living in the free Northern states. In his autobiography he focused upon the subject of sanctions (punishment for an evil act or a reward for a righteous deed) and slavery.
He said that there would be a required payment for the great evil of slavery and that the nation (America) would pay this debt. He also said that the whipping of the slaves without cause was very cruel and he gave an example in which immediate punishment fell upon the man who punished unnecessarily. However, he said that if the plantation masters treated the slaves fairly, then they would prosper (positive sanctions).
Thompson emphasized the need for fair sanctions in his autobiography.