The structure as well as the themes of theSymposiumsuggest that Eryximachus’ speech plays a fundamental role in the dialogue. The problem is that what he says in praise of love is far from clear and continues to be a subject of debate. The aim of our article is to re-examine this speech to clarify its meaning and determine its contribution to Plato’s theory of love. First, we will analyse thetextof theSymposium, then we will investigate itsmedicalback-ground, and finally we will evaluate (...) itsphilosophicalimpact. We will argue that Eryximachus’ speech, which draws inspiration from the Hippocratic Collection and the Pre-Socratic thought, is based on the concept of ‘harmony’: a balanced and organised unity of opposites. According to Eryximachus, love – conceived of as harmony – is the key to thehealthand thevirtueof human beings, as well as to the cosmic order and justice. Thereby the specificity of Eryximachus’ speech will become clear: Plato tries to combinescienceandmoralityby proposing, among other things, some considerations onbioethics. (shrink)