Sophrosyne

This article is about the Greek virtue. For the asteroid, see 134 Sophrosyne. Sophrosyne (σωφροσύνη) is a Greek philosophical term etymologically meaning 'moral sanity' and from there 'self control' or 'moderation' guided by true 'self-knowledge.'Greeks upheld the ideal of sophrosyne, which means prudence and moderation but ultimately its complex meaning, so important to the ancients, is very difficult to convey in English. It is perhaps best expressed by the two most famous sayings of the oracle at Delphi: "Nothing in excess" and "Know thyself."
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The quality of wise moderation or discreet good sense