“Everywhere, in whatever realm of life, whether among its callous, coarsely impoverished and messily moldering lower ranks, or among its monotonously gelid and tediously tidy upper strata, everywhere, if but once, a person will encounter a phenomenon on his journey that is unlike anything he has chanced to see heretofore and that, at least once will awake in him a feeling unlike any he is fated to feel for the rest of his life.”