Dictionary of Greek and Roman Biography and Mythology/Tubero, Aelius, jurists 1.

TU'BERO, AE'LIUS, jurists. 1. , called the Stoic, was a pupil of Panaetius; and one of the scholars of Panaetius dedicated to Tubero a treatise De Officiis (Cic. de Off. iii. 15). He was the son of Q. Aelius Tubero, who was the son-in-law of L. Aemilius Paulus. [See above. No. 3.] Tubero the son had a reputation for talent and legal knowledge. (Cic. Brut. 31, pro Muren. c. 36 ; Tac. Ann. xvi. 22 ; Gell. i. 22.) Plutarch (Lucull. c. 39) attributes to this Tubero the saying that Lucullus was " Xerxes in a toga ;" but this is a mistake, for Tubero the Stoic was a contemporary of the Gracchi and tribunus plebis in 133, the year  in which Tiberius was also tribunus plebis. Lucullus could not play the part of Xerxes in a toga earlier than 63. In 129 Tubero failed in his candidateship for the praetorship, but in  123 he was praetor. Pomponius says that he was also consul, but it has been inferred from the passage in the Brutus (c. 31) that he never obtained the consulship. He appears however to have been consul suffectus in 118. He was an opponent of C. Gracchus as well as of Tiberius, and delivered some speeches against him 123. Tubero is one of the speakers in Cicero's dialogue de Republica. The passages in the Pandect in which Tubero is cited do not refer to this Tubero, but to the son of Lucius. (Cic. Brut. ed. H. Meyer, c. 31, and the note ; H. Meyer, Oratorum Romanorum Frag. p. 251, 2d ed.)