[220] And Moses has shown that every one, to the best of his power, ought to make grateful acknowledgments for benefits received; for instance, that the clever man ought to offer up as a sacrifice his acuteness and wisdom; the eloquent man should consecrate all his excellences of speech, by means of psalms and a regular enumeration of the greatness and panegyric on the living God; and to proceed with each species, he who is a natural philosopher should offer up his natural philosophy; he who is a moral philosopher should make an offering of his ethical philosophy; he who is skilful in any art or science should dedicate to God his knowledge of the arts and sciences.