O man! Take heed! What saith deep midnight, indeed? “I lay asleep, asleep— I waked from my deep dream. The world is deep, And deeper than even day may dream. Deep is its woe— Joy— deeper yet than woe is she: Saith woe: ‘Hence! Go!’ Yet joy would have eternity, —Profound, profound eternity!

Friedrich Nietzsche, Zarathustra’s Roundelay