2 Ad Iouem deinde Hammonem pergit consulturus et de euentu futurorum et de origine sua. 3 Namque mater eius Olympias confessa uiro suo Philippo fuerat Alexandrum non ex eo se, sed ex serpente ingentis magnitudinis, concepisse. 4 Denique Philippus ultimo prope uitae suae tempore filium suum non esse palam praedicauerat. 5 Qua ex causa Olympiada uelut stupri conpertam repudio dimiserat
He then went to the temple of Jupiter Ammon, to consult the oracle about the event of his future proceedings, and his own parentage. For his mother Olympias had confessed to her husband Philip, that “she had conceived Alexander, not by him, but by a serpent of extraordinary size.” Philip, too, towards the end of his life, had publicly declared that “Alexander was not his son;” and he accordingly divorced Olympias, as having been guilty of adultery.