How a man should proceed from the principle of God being the father of all men to the rest

If a man should be able to assent to this doctrine as he ought, that we are all sprung from God in an especial manner, and that God is the father both of men and of gods, I suppose that he would never have any ignoble or mean thoughts about himself. But if Caesar should adopt you, no one could endure your arrogance; and if you know that you are the son of Zeus, will you not be elated? Yet we do not so; but since these two things are mingled in the generation of man, body in common with the animals, and reason and intelligence in common with the gods, many incline to this kinship, which is miserable and mortal; and some few to that which is divine and happy.