Definition
Stoicism
Stoicism is a Hellenistic school founded by Zeno of Citium in Athens around 300 BCE. It identifies flourishing with living virtuously, in accordance with nature and reason:
Virtue—wisdom, justice, courage and temperance—is the only genuine good; health, wealth and reputation may be preferred but do not determine flourishing.
Its practice cultivates sound judgement and responsible action while accepting outcomes beyond our control, rather than suppressing emotions or resigning ourselves to inaction.
Its ethics, logic and physics treat the cosmos as an ordered whole permeated by reason.