From 1822 until his death in New Haven on the 10th of March 1858 he was Dwight professor of didactic theology at Yale.
In 1764 Moratin published a collection of pieces, chiefly lyrical, under the title of El Poeta, and in 1765 a short didactic poem on the chase (Diana 0 arte de la caza).
In 1536 his didactic poem in Latin hexameters, De immortalitate animarum, was published at Lyons.
The so-called Orphic Poems, still extant, are of much later date, probably belonging to the 4th century A.D.; they consist of: (I) an Argonautica, glorifying the deeds of Orpheus on the " Argo," (2) a didactic poem on the magic powers of stones, called Lithica, (3) eighty-seven hymns on various divinities and personified forces of nature.
It was in reality sins and vices, however, rather than follies that came under his censure, and this didactic temper was reflected in Barclay.