The Epicureans, according to whom animals had no creation, doe suppose that by mutation of one into another, they were first made; for they are the substantial part of the world; like as Anaxagoras and Euripides affirme in these tearmes: nothing dieth, but in changing as they doe one for another they show sundry formes.
PlutarchI don't need a friend who changes when I change and who nods when I nod; my shadow does that much better.
Plutarch