Both express Ideas by figures in space; the former makes figures cognisable by two senses, sight and touch (although not by the latter as far as beauty is concerned); the latter only by one, the first of these. The aesthetical Idea (the archetype or original image) is fundamental for both in the Imagination, but the figure which expresses this (the ectype or copy) is either given in its bodily extension (as the object itself exists), or as it paints itself on the eye (according to its appearance when projected on a flat surface). In the first case the condition given to reflection may be either the reference to an actual purpose or only the semblance of it.

To Plastic, the first kind of beautiful formative Art, belong Sculpture and Architecture.