Atoms and quarks are real actors in the cosmos, but so are Fidel Castro, Houdini, and unicorns. We cannot declare a priori that certain actors are more real than others; all we can say is that some are stronger than others. But this strength is never measured solely in the currency of human struggles for dominance, since animals, stars and brute subatomic matter are engaged in the struggle for reality no less than are Machiavellian cabals.