When Hume insists that taste is a matter of delicacy, that it is a matter of having a sensitivity to features of an object itself, he is very close to the rationalist doctrine. Hume was really a covert objectivist (or partial one) about aesthetic pleasure because that pleasure had to be based on the sensitivity to features in the object.

You only have to talk to artists to see that they work according to rules, and that they know all too well that they can employ only certain means to achieve the ends they want.

Schiller never wanted to replace the moral with the aesthetic but he did want the moral to be one part of the aesthetic. He rightly notes the aesthetic dimension of morality, that we use concepts like grace to characterise people who do their duty with ease and pleasure.

The aesthetic dimension of the ideal state comes out in the idea of harmony, which is the classical idea of beauty as "concinnitas" or "unity-in-variety".

Since substance is infinite, the universe as a whole, i.e., god, Hegel is telling us that philosophy is knowledge of the infinite, of the universe as a whole, i.e, god. You cannot get more metaphysical than that. I think that Hegel scholars have to admit this basic fact rather than burying their heads in the sand and trying to pretend that Hegel is concerned with conceptual analysis, category theory, normativity or some such contemporary fad.

When Hume insists that taste is a matter of delicacy, that it is a matter of having a sensitivity to features of an object itself, he is very close to the rationalist doctrine. Hume was really a covert objectivist (or partial one) about aesthetic pleasure because that pleasure had to be based on the sensitivity to features in the object.

There is a sinister anachronistic interpretation of the aesthetic state as some kind of totalitarian regime that puts aesthetic over moral standards; one associates it with national-socialism. But this has nothing to do with the romantics, whose ideal of the aesthetic state has much more to do with the republican tradition.