I remember reading about a night janitor who kept totally to himself, preferring easy janitorial work during the evenings. He did this because what he was doing in his off-hours was mind-boggling, ground-breaking research that he accomplished alone, in his little, dingy apartment. It was only after he had died that a literal mountain of his astounding works were discovered piled high alongside his dead body. He was a diligent, quiet soul and nobody even suspected that this lowly night janitor was truly a genius or what he was really doing to contribute to the world. And evidently, that was ok by him.