In turning away from Hegel the [nineteenth century] acknowledged that, having reached the summit of its desires and achievements, it was dissatisfied with itself, that this was after all not what it had intended. It set Hegel aside and tried again, but did not even reach such a peak a second time, and thus manifestly it was bound to be even less satisfied than it was before, although it pretended to be. Where does the fault lie? In Hegel? Those who study him will not receive this impression. If it is a question of doing what the entire nineteenth century evidently wanted to do, then Hegel apparently did it as well as it could possibly be done. Or is the reason that afterwards the age of the great men was past, that there was no genius present in the second half of the century to carry out the better things which the century it seems had in mind in turning away from Hegel? But it is always a bad sign when people can find nothing to say but that unfortunately the right people were lacking. This should be said either always or never. Every age, perhaps, has the great men it deserves, and does not have those it does not deserve. The question only remains, whether it was a hidden flaw in the will of the age itself, perfect as the expression was that it had found in Hegel, which was the reason why it could not find any satisfaction in Hegel and therefore not in itself, and yet could not find any way of improving upon and surpassing Hegel, and therefore itself. It might of course be possible that Hegelianism indeed represented in classic form the concern of the nineteenth century, but precisely as such came to reveal the limited nature of this concern, and the fact that it was impossible to proceed from it to the settlement of every other question of truth. And that for that reason it was, curiously, condemned.

— Karl Barth, Protestant Theology in the Nineteenth Century, 374. The whole lecture is an absolute tour de force: elucidating both what, for both philosophers and theologians, makes Hegel such an immensely attractive option — and why Hegel, taken on his own terms (like nineteenth-century thought as a whole), ultimately represents a cul de sac for those disciplines.