The article shows that Odysseus in Sophocles’ _Ajax_ and _Philoctetes_ is at the centre of a redefinition of the concept of “nobility”. This figure has been seen to promote a new definition of the concept, but previous analyses tended to focus only on one or the other of the two plays, as Odysseus appeared too dissimilar to be considered from the same viewpoint. A closer analysis reveals that he defends the same values and is endowed with the same non-élite features (...) in both plays. Among those values is the idea that nobility has nothing to do with descent, but with the ability at proving helpful to the whole social group. The perception other characters have of Odysseus, however, changes between the first and the second play. This change can be linked to the evolution of Athenian society. With the development of democracy, non-élite citizens redefined concepts such as _eugeneia_. (shrink)