One more word about giving instruction as to what the world ought to
be. Philosophy in any case always comes on the scene too late to give
it… When philosophy paints its gray in gray, then has a shape of life
grown old. By philosophy’s gray in gray it cannot be rejuvenated but
only understood. The owl of Minerva spreads its wings only with the
falling of the dusk.
—G.W.F. Hegel, Philosophy of Right (1820),