Aristo of Chios

Early Stoic philosopher and student of Zeno of Citium who argued for a more radical Stoicism — eliminating the distinctions between 'preferred' and 'dispreferred' indifferents that most Stoics maintained — taking the position that virtue alone matters, with no graded scale of external goods.

Represents the more radical wing of early Stoicism — the position that if virtue is truly the only good, then no external thing (health, wealth, reputation) can have any value at all, even as 'preferred' — making Aristo the Stoic who took the founding premise to its logical extreme.