2. Q. Lucilius
Balbus, probably the brother of the preceding, a Stoic philosopher, and a pupil of Panaetius, had made such progress in the Stoic philosophy, that he appeared to Cicero comparable to the best Greek philosophers. (De Nat. Deor.
He is introduced by Cicero in his dialogue " On the Nature of the Gods" as the expositor of the opinions of the Stoics on that subject, and his arguments are represented as of considerable weight. (De Nat. Deor.
3.40, de Divin.
He was also the exponent of the Stoic opinions in Cicero's " Hortensius." (Fragm.
p. 484, ed. Orelli.)