The Lovers (Greek: Ἐρασταί; Latin: Amatores) is a Socratic dialogue included in the traditional corpus of Plato's works, though its authenticity has been doubted.
The Greek title Erastai is the plural form of the term erastēs, which refers to the older partner in a pederastic relationship. Since in Classical Greek terms such a relationship consists of an erastēs and an erōmenos, the title Lovers, sometimes used for this dialogue, makes sense only if understood in the technical sense of "lover" versus "beloved" but is misleading if taken to refer to two people in a love relationship. Ancient manuscript marginalia suggest that the title might have been Anterastai (Ἀντερασταί), which specifically means "Rival erastai." This term, used in the dialogue itself (132c5, 133b3), is mentioned as the dialogue's title (together with a subtitle, On Philosophy) in Diogenes Laertius' listing of the Thrasyllan tetralogies (3.59). The Latin translations Amatores and Rivales have also been used as the dialogue's title.
The rival erastai of the title are a devotee of wrestling and athletics, who disparages philosophy as shameful nonsense, and a young man who cultivates mousikē (a term embracing music, poetry, and philosophy). As the dialogue opens, they are quarrelling, at a grammarian's school in the presence of the boy they love and of other boys and young men, over the question whether philosophizing is noble and admirable (kalon).
Socrates inserts himself into the quarrel. When he begins by questioning the musical rival's claim to know what philosophizing is, he gets the answer that philosophy is polymathy. With the help of the athletic rival, who knows that the good of exercise depends on being done in the right amount (not the maximum amount), Socrates points out that the same is true of most good things, and turns to asking what kind of things the one who philosophizes (loves wisdom) ought to learn, if the object is not simply to know all or many things (135a). The musical rival suggests that the philosopher, while not needing to bother himself with the hands-on practicalities (cheirourgia, 135b), should aspire to a level of understanding in all the arts (technai) such that he is second only to the expert in that particular field—still a kind of polymathy. Socrates challenges this suggestion by forcing the would-be philosopher to admit that, in any conceivable particular circumstance, the philosopher would be useless in comparison to a true expert on the matter (e.g., a physician or a ship's pilot).