Never dine with a patient who is in your debt, but get your dinner at an inn, otherwise he will deduct his hospitality from your fee.

In: Samuel Evans Massengill, A Sketch of Medicine and Pharmacy and a View of Its Progress by the, Massengill Family from the Fifteenth to the Twentieth Century (p. 307), The S.E. Massengill Company. Bristol, Tennessee, USA. 1943