  In an important and influential essay, Robert Adams argues that even if there is a best creatable world, God need not create it. He supposes that the world God creates contains creatures each of whom is as happy as it is in any possible world in which it exists. Moreover, no creature in this world is so miserable that it would be better had it not existed. Adams then supposes that there is some other possible world with different creatures that exceeds this world in its degree of happiness, a world that God could have created. So, God has created a world with a lesser degree of happiness than he could have. Has God wronged anyone in creating this world? Adams argues that God cannot have wronged the creatures in the other possible world, for merely possible beings don't have rights. Nor can he have wronged the creatures in the world he has created, for their lives could not be made more happy. Adams notes that God would have done something wrong in creating this world were the following principle true.