Samuel Taylor Coleridge says

We all know that art is the imitatress of nature. And, doubtless, the truths which I hope to convey would be barren truisms, if all men meant the same by the words “imitate” and “nature.” But it would be flattering mankind at large, to presume that such is the fact. First, to imitate. The impression on the wax is not an imitation, but a copy, of the seal; the seal itself is an imitation. But, further, in order to form a philosophic conception, we must seek for the kind, as the heat in ice, invisible light, etc., whilst, for practical purposes, we must have reference to the degree. It is sufficient that philosophically we understand that in all imitation two elements must coexist, and not only coexist, but must be perceived as coexisting. These two constituent elements are likeness and unlikeness, or sameness and difference, and in all genuine creations of art there must be a union of these disparates. The artist may take his point of view where he pleases, provided that the desired effect be perceptibly produced—that there be likeness in the difference, difference in the likeness, and a reconcilement of both in one. If there be likeness to nature without any check of difference, the result is disgusting, and the more complete the delusion, the more loathsome the effect. Why are such simulations of nature, as wax-work figures of men and women, so disagreeable? Because not finding the motion and the life which we expected, we are shocked as by a falsehood, every circumstance of detail, which before induced us to be interested, making the distance from truth more palpable. You set out with a supposed reality and are disappointed and disgusted with the deception; while, in respect to a work of genuine imitation, you begin with an acknowledged total difference, and then every touch of nature gives you the pleasure of an approximation to truth. The fundamental principle of all this is undoubtedly the horror of falsehood and the love of truth inherent in the human breast