This would fix the date of his death in 738; and, as Alcuin tells us he was eighty-one years old when he died, it may be inferred that he was born in 657 - a theory on which all the dates given above are based, though it must be added that they are substantially confirmed by the incidental notices of Bede.
Abelard's discussion of the problem (which it is right to say is on the whole incidental rather than systematic) is thus marked by an eclecticism which was perhaps the source at once of its strength and its weakness.
The first forty-two years of his life are obscure; we learn from incidental remarks of his that he was a Sunnite, probably according to the IIanifite rite, well versed in all the branches of natural science, in medicine, mathematics, astronomy and astrology, in.
The figure ten may be taken from the commandments, 2 as in Gregory Nazianzen's later, and more incidental, decalogue of belief.
In late times the priests of Denderah claimed Khufu as a benefactor; he was reputed to have built temples to the gods near the Great Pyramids and Sphinx (where also a pyramid of his daughter Hentsen is spoken of), and there are incidental notices of him in the medical and religious literature.