“World of sleep, where our inner knowledge, held in subjugation by the disturbances in our organs, quickens the rhythm of our heart or of our breathing, for the same dosage of alarm, of sadness, of remorse is a hundred times more potent when thus injected into out veins; as soon as, in order to travel along the arteries of the subterranean city, we have embarked on the dark waves of our own blood, as if on the sixfold meanders of some eternal Lethe, tall, solemn forms appear to us, accost us, and then go from us, leaving us in tears.”