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.

The other arts, moreover, cannot be of use to their possessor without tools, for it is impossible to pipe without a pipe or to strum without a lyre or to ride without a horse ; but this one is so genial and presents so little difficulty to the artisan that even one who has no tools can follow it.