In opposition to the sentiment here expressed that 'Painting is and ought to be, in many points of view and strictly speaking, no imitation at all of external nature,' it is emphatically said in another place: 'Nature is and must be the fountain which alone is inexhaustible, and from which all excellences must originally flow.'
I cannot undertake to reconcile so many contradictions, nor do I think it an easy task for the student to derive any simple or intelligible clue from these conflicting authorities and broken hints in the prosecution of his art. Sir Joshua appears to have imbibed from others (Burke or Johnson) a spurious metaphysical notion that art was to be preferred to nature, and learning to genius, with which his own good sense and practical observation were continually at war, but from which he only emancipates himself for a moment to relapse into the same error again shortly after.(5) The conclusion of the Twelfth Discourse is, I think, however, a triumphant and unanswerable denunciation of his own favourite paradox on the objects and study of art.
'Those artists' (he says with a strain of eloquent truth) 'who have quitted the service of nature (whose service, when well understood, is perfect freedom) and have put themselves under the direction of I know not what capricious fantastical mistress, who fascinates and overpowers their whole mind, and from whose dominion there are no hopes of their being ever reclaimed (since they appear perfectly satisfied, and not at all conscious of their forlorn situation), like the transformed followers of Comus,
Not once perceive their foul disfigurement;
But boast themselves more comely than before.
'Methinks such men who have found out so short a path have no reason to complain of the shortness of life and the extent of art; since life is so much longer than is wanted for their improvement, or is indeed necessary for the accomplishment of their idea of perfection.(6) On the contrary, he who recurs to nature, at every recurrence renews his strength. The rules of art he is never likely to forget; they are few and simple: but Nature is refined, subtle, and infinitely various, beyond the power and retention of memory; it is necessary therefore to have continual recourse to her. In this intercourse there is no end of his improvement: the longer he lives, the nearer he approaches to the true and perfect idea of Art.'
FN to ESSAY XIII
(1) How careful is Sir Joshua, even in a parenthesis, to insinuate the obligations of this great genius to others, as if he would have been nothing without them.
(2) If Sir Joshua had an offer to exchange a Luca Giordano in his collection for a Claude Lorraine, he would not have hesitated long about the preference.
(3) Written in 1788.
(4) Gainsborough.