Diogenes Laertius, Lives of the Eminent Philosophers 7.2
“Hêrillos the Karthaginian said that our purpose was knowledge: we should live by adducing the life of knowledge to everything and surrendering nothing to ignorance. He believed that knowledge was a practice of the imagination, imperturbable by argument. He used to say that there was no single end, but that it changed depending on events and situations, just as a bronze figure could be made into either Alexander or Socrates.”
Ἥριλλος δ᾿ ὁ Καρχηδόνιος τέλος εἶπε τὴν ἐπιστήμην, ὅπερ ἐστὶ ζῆν ἀεὶ πάντ᾿ ἀναφέροντα πρὸς τὸ μετ᾿ ἐπιστήμης ζῆν καὶ μὴ τῇ ἀγνοίᾳ διαβεβλημένον. εἶναι δὲ τὴν ἐπιστήμην ἕξιν ἐν φαντασιῶν προσδέξει ἀνυπόπτωτον ὑπὸ λόγου. ποτὲ δ᾿ ἔλεγε μηδὲν εἶναι τέλος, ἀλλὰ κατὰ τὰς περιστάσεις καὶ τὰ πράγματ᾿ ἀλλάττεσθαι αὐτό, ὡς καὶ τὸν αὐτὸν χαλκὸν ἢ Ἀλεξάνδρου γινόμενον ἀνδριάντα ἢ Σωκράτους.”
Lactantius, Inst. Div. 3.7
“The highest good according to Herillus is knowledge; according to Zeno, to live congruously with nature, and according to some Stoics, to pursue virtue.”
Herilli summum bonum est scientia, Zenonis cum natura congruenter vivere, quorundam Stoicorum virtutem sequi.
Cicero, De Finibus 2.14
“Erillus, moreover, since he refers everything back to knowledge, imagines one certain good, but it is not the greatest good by which you could steer a life. For this reason, Erillus has been dismissed for a long time. No one has directly disputed him since Chrysippus.”
Erillus autem ad scientiam omnia revocans unum quoddam bonum vidit, sed nec optimum nec quo vita gubernari possit. Itaque hic ipse iam pridem est reiectus; post enim Chrysippum non sane est disputatum.
Cicero, Academica 2.42
“I am not including the philosophies which now seem abandoned, for example Erillus who positioned the highest good in thinking and knowledge. Although he was a pupil of Zeno, you can see how much he disagreed with him and how little with Plato.”
Omitto illa quae relicta iam videntur—ut Erillum, qui in cognitione et scientia summum bonum ponit; qui cum Zenonis auditor esset, vides quantum ab eo dissenserit et quam non multum a Platone.
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