Words become luminous when the poet's finger has passed over them its phosphorescence

Words, like glasses, obscure everything which they do not make clear.

Words, like eyeglasses, blur everything that they do not make clear

Words like glass, obscure when they do not aid vision

Words, like glass, obscure when they do not aid vision.

But all, the world's coarse thumb / And finger failed to plumb, / So passed in making up the main account.