Is it true that we live in an age of greed? If that is so, there is probably much to be learned from the virtue of moderation. Moderation (Greek: sophrosyne) was one of the cardinal virtues in Christian and Greek though, and it is also central in the ethics of other traditions. What does it mean today, pertaining to money, armed conflict, sexuality, the environment, and alcohol? This philosophical essay aims to elucidate the meaning and significance of the virtue of moderation.