Plato, Laws 902d

καὶ πολύ γε. ἰατρῷ δὲ προστεταγμένον ὅλον τι θεραπεύειν, βουλομένῳ καὶ δυναμένῳ τῶν μὲν μεγάλων ἐπιμελεῖσθαι, τῶν μορίων δὲ καὶ σμικρῶν ἀμελοῦντι, ἕξει ποτὲ καλῶς αὐτῷ τὸ πᾶν; οὐδαμῶς. οὐ μὴν οὐδὲ κυβερνήταις οὐδὲ στρατηγοῖς οὐδʼ οἰκονόμοις, οὐδʼ αὖ τισὶν πολιτικοῖς οὐδʼ ἄλλῳ τῶν τοιούτων οὐδενί, χωρὶς τῶν ὀλίγων καὶ σμικρῶν πολλὰ ἢ μεγάλα· οὐδὲ

Much more. When a physician is charged with the curing of a whole body, if, while he is willing and able to care for the large parts, he neglects the small parts and members, will he ever find the whole in good condition? Certainly not. No more will pilots or generals or house-managers, nor yet statesmen or any other such persons, find that the many and great thrive apart from the few