Moderation, the Golden Mean, the Aristonmetron, is the secret of wisdom and of happiness. But it does not mean embracing an unadventurous mediocrity: rather it is an elaborate balancing-act, a feat of intellectual skill demanding constant vigilance. Its aim is a reconciliation of opposites.
"Aristonmetron" is an unusual formation of the Greek άριστον μέτρον (ariston metron or metron ariston: "Moderation is best"). - Opera and Humour (1991)