“that each ejaculation contains several billion sperm cells –or roughly the same number as there are people in the world– which means that, in himself, each man holds the potential of an entire world. And what would happen, could it happen, is the full range of possibilities: a spawn of idiots and geniuses, of the beautiful and the deformed, of saints, catatonics, thieves, stock brokers, and high-wire artists. Each man, therefore, is the entire world, bearing within his genes a memory of all mankind. Or, as Leibniz put it: “Every living substance is a perpetual living mirror of the universe.”