“That God lets himself be born and becomes a human being, is no idle whim, something that occurs to him so as to have something to do, perhaps to put a stop to the boredom that has brashly been said to be bound up with being God-it is not to have an adventure. No, the fact that God does this is the seriousness of existence. And the seriousness in this seriousness is, in turn, that each shall have an opinion about it.”