' He saw the mosaics as an illustrated Bible, which 'could not be ignored or escaped from' (
Works, 10, p. 132) by the worshipper.
The style of these mosaics is described as 'Byzantine', a style that originated in Greece and Turkey during the late Roman times and culminated in the 1100s. Ruskin saw Byzantine art as an important stepping-stone from ancient classical art. Rejecting the conventional descriptions of the style as 'barbarous' or primitive, he presented it as a pioneering style, an influence on later art.
In the course of his correspondence with Rooke, Ruskin wrote that 'The real
fact is that all Byzantine mosaic (and all Eastern colour) has splendour for its first object -- and its type is the peacock's tail.'.
He adds, for Rooke's benefit, that 'If your drawings glow and melt like that you are right': 'Peacock's tail in shade or light it may be -- and much sober brown in
any light may mix with its violet and gold -- but
that is what the mosaicist wanted to do, and for the most part did'.
Ruskin concludes, provocatively, that 'All that is grey, cold, reserved, or modest, in these mosaics (in any other sense than a humming-bird or flamingo or pheasant -- or aforesaid peacock -- is modest) is European, mostly Roman, some of it German -- all of it bad.' (
Works, 30, p. lviii).