I could give you a number of examples to show how widespread has been this practice of mutual pilfering among the authors of our old literature…. by transferring something of theirs to his own immortal work he [Virgil] has ensured that the memory of these old writers—whom, as the tastes of today show, we are already beginning to deride as well as to neglect—should not wholly perish.

Macrobius, Saturnalia