The first was written during the persecution of Maximinus Thrax, and was dedicated to his friends Ambrosius and Protoctetus.
Among the works which he translated into Syriac and of which his versions survive are treatises of Aristotle, Porphyry and Galen, 3 the Ars grammatica of Dionysius Thrax, the works of Dionysius the Areopagite, and possibly two or three treatises of Plutarch.4 His own original works are less important, but include a " treatise on logic, addressed to Theodore (of Merv), which is unfortunately imperfect, a tract on negation and affirmation; a treatise, likewise addressed to Theodore, On the Causes of the Universe, according to the Views of Aristotle, showing how it is a Circle; a tract On Genus, Species and Individuality; and a third tract addressed to Theodore, On the Action and Influence of the Moon, explanatory and illustrative of Galen's IIEpi rcptaiµwv r t µepwv, bk.
DIONYSIUS THRAX (so called because his father was a Thracian), the author of the first Greek grammar, flourished about 100 He was a native of Alexandria, where he attended the lectures of Aristarchus, and afterwards taught rhetoric in Rhodes and Rome.
Dionysius Thrax, the author of the first scientific Greek grammar, may also be mentioned.
Two critical editions of the Iliad and Odyssey were produced by his successor, Aristarchus, who was librarian until 1 4 6 B.C. and was the founder of scientific scholarship. His distinguished pupil, Dionysius Thrax (born c. 166 B.C.), drew up a Greek grammar which continued in use for more than thirteen centuries.
To the same century we may assign the grammarian Theodosius of Alexandria, who, instead of confining himself (like Dionysius Thrax) to the tenses of Tb rTW in actual use, was the first to set forth all the imaginary aorists and futures of that verb, which have thence descended through the Byzantine age to the grammars of the Renaissance and of modern Europe.