For about three hundred years in English literature it was the fashion—a fashion borrowed from the Latin poets—to speak of love as a fire or flame, and you must understand the image in these verses in that signification. To-day the fashion is not quite dead, but very few poets now follow it.
Byron himself, with all his passion and his affected scorn of ethical convention, could and did, when he pleased, draw beautiful portraits of moral as well as physical attraction. These stanzas are famous; they paint for us a person with equal attraction of body and mind.
She walks in beauty, like the night
Of cloudless climes and starry skies;
And all that’s best of dark and bright
Meet in her aspect and her eyes:
Thus mellow’d to that tender light
Which heaven to gaudy day denies.
One shade the more, one ray the less,
Had half impair’d the nameless grace