'Too well I know, by fruitless error taught,
How latent beauty hath fallacious clues,
How difficult to catch, how quick to lose
The mirage of imaginative thought.
'And harder still to make that vision bear
The loose refraction of a modern tongue,
To render sight to hearing, old to young,
And fix my purview on an English ear.
'Too well I know, by gardener's hopes misled,
How cheap are things which long have cost me dear;