[Rhyme is] but the invention of a barbarous age, to set off wretched matter and lame Meter; … Not without cause therefore some both Italian and Spanish poets of prime note have rejected rhyme, … as have also long since our best English tragedies, as... trivial and of no true musical delight; which [truly] consists only in apt numbers, fit quantity of syllables, and the sense variously drawn out from one verse into another, not in the jingling sound of like endings, a fault avoided by the learned ancients both in poetry and all good oratory.

Introduction to Paradise Lost Added, 1668.