Plato, Laws 687d

καὶ μὴν τοῖς γε φίλοις που συνευχοίμεθʼ ἂν ταῦτα ἅπερ ἐκεῖνοι ἑαυτοῖσιν. τί μήν; φίλος μὲν ὑὸς πατρί, παῖς ὢν ἀνδρί. πῶς δʼ οὔ; καὶ μὴν ὧν γʼ ὁ παῖς εὔχεται ἑαυτῷ γίγνεσθαι, πολλὰ ὁ πατὴρ ἀπεύξαιτʼ ἂν τοῖς θεοῖς μηδαμῶς κατὰ τὰς τοῦ ὑέος εὐχὰς γίγνεσθαι. ὅταν ἀνόητος ὢν καὶ ἔτι νέος εὔχηται, λέγεις; καὶ ὅταν γε ὁ πατὴρ ὢν γέρων ἢ καὶ σφόδρα νεανίας,

Moreover, on behalf of our friends we will join in making the same prayer which they make on their own behalf. To be sure. And a son is a friend to his father, the boy to the man. Certainly. Yet the father will often pray the gods that the things which the son prays to obtain may in no wise he granted according to the son’s prayers. Do you mean, when the son who is praying is still young and foolish? Yes, and also when the father, either through age or through the hot temper of youth,