It appears that the present-day form of African American English is not the inheritance of the period of slavery, but the creation of the second half of the 20th century.
“It is now for the Catholic Church to bend herself to her work with calmness and generosity. It is for you to observe her with renewed and friendly attention.”
“Humour is a great vehicle for getting a message across. If you get too serious, you could die of starch.”