There may be "Some Xanadu where Kublai can a stately pleasure dome decree," and carry out his conceptions to his own disillusionment, perhaps.

For if the embodiment of a fancy, however complete, left nothing further to be wished, imagination would have no incentive to work.

Coleridge's distinction does very well to separate, empirically, certain kinds of imaginative concepts from certain others; but it has no real foundation in fact.

Nor presumably did he mean it to have.

But it serves, not inaptly, as a text to point out an important scientific truth, namely, that there are not two such qualities of the mind, but only one.