Jason De Nores, in this instance, as in most others, has paid more attention to his Author, than the rest of the Commentators. His note is as follows.
[O major juvenum!] _Per apostrophen _ad majorem natu __ex pisonibus convertis orationem, reddit rationem quare summum, ac perfectissimum poema esse debeat utitur autem proaemio quasi quodam ad _benevolentiam & attentionem _comparandum sumit autem _benevolentiam à patris & filii laudibus: attentionem_, dum ait, "hoc tibi dictum tolle memor!" quasi dicat, per asseverationem,_firmum _omninò et _verum.
543.—_Boasts not MESSALA'S PLEADINGS, nor is deem'd AULUS IN JURISPRUDENCE.]
The Poet, with great delicacy, throws in a compliment to these distinguished characters of his time, for their several eminence in their profession. Messala is more than once mentioned as the friend and patron of Horace.
562.—Forty thousand sesterces a year.]
The pecuniary qualification for the Equestrian Order. Census equestrem summam nummorum.
565.—Nothing, IN SPITE OF GENIUS, YOU'LL commence]
Tu nihil, invitâ dices faciesve Minervâ.
Horace, says Dacier, here addresses the Elder Piso, as a man of mature years and understanding; and be begins with panegyrick, rather than advice, in order to soften the precepts he is about to lay down to him.
The explication of De Nores is much to the same effect, as well as that of many other Commentators.