its vulnerability in conditions of deprivation or calamity... whether the good condition of character is itself, in his view, vulnerable to erosion by uncontrolled events
This passage sets out Nussbaum's core Aristotelian programme: to examine the degree to which the good human life, including virtuous character itself, is structurally exposed to the depredations of fortune.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986thesis