What they omit is now movingly displayed to us in the person and the story of Alcibiades. We realize, through him, the deep importance unique passion has for ordinary human beings; we see its irreplaceable contribution to understanding.
Nussbaum argues that Alcibiades’ speech is Plato’s structural counter-demonstration against Diotima, showing that the ascent model omits the irreplaceable cognitive and ethical contribution of particular erotic passion.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986thesis