Some further considerations will help to clarify this matter: The heavens are observed at the moment of a birth and the individual fate is thence predicted in the idea that the stars are no mere indications, but active causes, of the future events. Sometimes the Astrologers tell of noble birth; “the child is born of highly placed parents”; yet how is it possible to make out the stars to be causes of a condition which existed in the father and mother previously to that star pattern on which the prediction is based? And consider still further: They are really announcing the fortunes of parents from the birth of children; the character and career of children are included in the predictions as to the parents – they predict for the yet unborn! – in the lot of one brother they are foretelling the death of another; a girl’s fate includes that of a future husband, a boy’s that of a wife. Enneads III,1,5
Now, can we think that the star-grouping over any particular birth can be the cause of what stands already announced in the facts about the parents? Either the previous star-groupings were the determinants of the child’s future career or, if they were not, then neither is the immediate grouping. And notice further that physical likeness to the parents – the Astrologers hold – is of purely domestic origin: this implies that ugliness and beauty are so caused and not by astral movements. Enneads III,1,5