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.

I have shown that, as I said, philosophers have been eager to play parasite; but nobody can instance a parasite who has cared to practise philosophy.

v.3.p.283