Plato, Laws 845d

δὲ τῷ νόμῳ κινδυνευέτω ἀναγώνιστος γίγνεσθαι περὶ ἀρετῆς, ἐὰν εἰς τότε τὰ τοιαῦτα περὶ αὐτοῦ τοὺς τότε κριτάς τις ἀναμιμνῄσκῃ.ὕδωρ δὲ πάντων μὲν τὸ περὶ τὰς κηπείας διαφερόντως τρόφιμον, εὐδιάφθαρτον δέ· οὔτε γὰρ γῆν οὔτε ἥλιον οὔτε πνεύματα, τοῖς ὕδασι σύντροφα τῶν ἐκ γῆς ἀναβλαστανόντων, ῥᾴδιον φθείρειν φαρμακεύσεσιν ἢ ἀποτροπαῖς ἢ καὶ κλοπαῖς, περὶ δὲ τὴν ὕδατος φύσιν ἐστὶν τὰ τοιαῦτα σύμπαντα δυνατὰ

in seeking honors, in case anyone brings these facts to the notice of the judges at the time. Water above all else in a garden is nourishing; but it is easy to spoil. For while soil and sun and wind, which jointly with water nourish growing plants, are not easy to spoil by means of sorcery or diverting or theft, all these things may happen to water; hence it requires the assistance of law.