"The truth of infinite value that he teaches is realism — the doctrine that all truth and beauty are to be attained by a humble and faithful study of nature, and not by substituting vague forms, bred by imagination on the mists of feeling, in place of definite, substantial reality. The thorough acceptance of this doctrine would remould our life; and he who teaches its application to any one department of human activity with such power as Mr Ruskin's, is a prophet for his generation."