I have brought together as many instances as appear necessary to make out the several points which I wished to suggest to your consideration in this Discourse; that your own thoughts may lead you further in the use that may be made of the analogy of the Arts; and of the restraint which a full understanding of the diversity of many of their principles ought to impose on the employment of that analogy. The great end of all those arts is, to make an impression on the imagination and the feeling. The imitation of nature frequently does this. Sometimes it fails, and something else succeeds. I think, therefore, the true test of all the arts is not solely whether the production is a true copy of nature, but whether it answers the end of art, which is, to produce a pleasing effect upon the mind. It remains only to speak a few words of Architecture, which does not come under the denomination of an imitative art. It applies itself, like Music (and, I believe, we may add Poetry), directly to the imagination, without the intervention of any kind of imitation. There is in Architecture, as in Painting, an inferior branch of art, in which the imagination appears to have no concern. It does not, however, acquire the name of a polite and liberal art from its usefulness, or administering to our wants or necessities, but from some higher principle; we are sure that in the hands of a man of genius it is capable of inspiring sentiment, and of filling the mind with great and sublime ideas. It may be worth the attention of Artists to consider what materials are in their hands, that may contribute to this end; and whether this art has it not in its power to address itself to the imagination with effect, by more ways than are generally employed by Architects.