You say that you have a dog? Yes, a villain of a one, said Clesippus. And he has puppies? Yes,and they are very like himself. And the dog is the father of them? Yes, he said, I certainly saw him and the mother of the puppies come together. And is he not yours? To be sure he is. Then he is a father, and he is yours; ergo, he is your father, and the puppies are your brothers.