Phdr gre 237b-237cπερὶ παντός, ὦ παῖ, μία ἀρχὴ τοῖς μέλλουσι καλῶς (237c) βουλεύσεσθαι: εἰδέναι δεῖ περὶ οὗ ἂν ᾖ ἡ βουλή, ἢ παντὸς ἁμαρτάνειν ἀνάγκη. τοὺς δὲ πολλοὺς λέληθεν ὅτι οὐκ ἴσασι τὴν οὐσίαν ἑκάστου. ὡς οὖν εἰδότες οὐ διομολογοῦνται ἐν ἀρχῇ τῆς σκέψεως, προελθόντες δὲ τὸ εἰκὸς ἀποδιδόασιν: οὔτε γὰρ ἑαυτοῖς οὔτε ἀλλήλοις ὁμολογοῦσιν.
Phdr eng'All good counsel begins in the same way; a man should know what he is advising about, or his counsel will all come to nought. But people imagine that they know about the nature of things, when they don't know about them, and, not having come to an understanding at first because they think that they know, they end, as might be expected, in contradicting one another and themselves.
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