De parasito sive artem esse parasiticam

Lucian of Samosata

Lucian, Vol. 3. Harmon, A. M., editor. London: William Heinemann, Ltd.; Cambridge, MA: Harvard University Press, 1921.

That in truth it is the most royal of the arts, you can infer from this fact above all: men work at the rest of them not only with discomfort and sweat but actually sitting or standing, just as if they were slaves to the arts, while the parasite plies his art lying down, like a king!