a famous Platonic philosopher, who probably flourished during the sixth century. He was the author of an esteemed commentary on the Timaeus of Plato, which Meursius edited and printed at Leyden in 1617, 4to, and which J. A. Fabricius has inserted at the end of the second volume of the works of St Hippolytus, Hamburg, 1718, fol. Critics are divided in opinion respecting this author. Fabricius asserts that he was a Christian; and Giraldi supposes that he was even a deacon of the church at Carthage. But the Abbé Goujet, in his dissertation inserted in the first volume of the Mémoires de Littérature, maintains the contrary opinion, on the grounds that Chalcidius adopts the opinions of Plato, doubts the inspiration of the books of Moses, and speaks of the dogmas of Christianity with indifference, or at least without indicating whether he believed them or not. Mosheim and Brucker, however, place him among the syncretist or eclectic philosophers, who amalgamated the philosophy of Plato with the doctrines of Christianity. It is the opinion of Mosheim that he never professed Christianity; Brucker again is of a contrary opinion, and says that he shared the errors of Platonism in common with many whose Christianity was never questioned.