Horace, Epistles 1.2.1-4
Horace has been reading Homer again and finding it a profitable experience, better than reading philosophers.
Troiani belli scriptorem, Maxime Lolli,
dum tu declamas Romae, Praeneste relegi:
qui quid sit pulchrum, quid turpe, quid utile, quid non,
planius ac melius Chrysippo et Crantore dicit.
While you, Lollius Maximus, have been declaiming at Rome, I have been rereading at Praeneste the writer of the Trojan War. He says better and more plainly than Chrysippus and Crantor what is beautiful, what is ugly, what is useful, what is not.
Chrysippus was the ‘second founder’ of Stoicism, Crantor was a follower of Plato who wrote 30,000 lines of commentary, according to Diogenes Laertius 4.24.