The Golden Sayings of Epictetus
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Rufus(2) used to say, If you have leisure to praise me, what I say is naught. In truth he spoke in such wise, that each of us who sat there, thought that some one had accused him to Rufus: so surely did he lay his finger on the very deeds we did: so surely display the faults of each before his very eyes.
(2) C. Musonius Rufus, a Stoic philosopher, whose lectures Epictetus had attended.