Hart on the sublime

I am somewhat frustrated by not yet reaching the theological sections of Hart's The Beauty of the Infinite. One of the problems was the section 'The Veil of the Sublime', which I found quite baffling. I still don't know really what is meant by 'the sublime' other than 'that which is unrepresentable'. For Kant, the subline 'is suggested to us in moments when, presented by an immensity, grandeur, or force that exceeds representation - because it requires of apprehension an 'infinite' activity that surpasses the power of comprehension, which is itself dependent upon the inward synthesis of the sense of time and hence finite - reasons must return from the realm of the sensible...' p. 45-6

Anyhow, why this matters is that Hart goes on to classify postmodern thought under four 'narratives of the sublime':

1 - the differential sublime, 'which might also be called the sublimity of exteriority'. Here he characterises Derrida's differance. Instead of order and classification, the sheer play of difference is celebrated.
2 - the cosmological sublime, 'which is the form the discourse of the unrepresentable can take when the Nietzschean impulse predominates', as it does with Deleuze, and then Foucault.
3 - the ontological sublime, represented by Heidegger
4 - the ethical sublime, whose chief figure is Levinas.

Hart is quite delightfully savage with some of these idols of our time. Chiefly, he attempts something very worthwhile, which is to sure why postmodern philosophers do not succeed even on their own terms. But, I am still left with that rather stupid feeling you get when you read what you don't understand...