 Which use of ‘happiness’ corresponds to the true meaning of the term in contemporary English? Arguably, both. The well-being usage clearly dominates in the historical literature through at least the early modern era, for instance in translations of the ancient Greeks’ ‘eudaimonia’ or the Latin ‘beatitudo’, though this translation has long been a source of controversy. Jefferson’s famous reference to “the pursuit of happiness” probably employed the well-being sense. Even later writers such as Mill may have used the term in its well-being sense, though it is often difficult to tell since well-being itself is often taken to consist in mental states like pleasure. In ordinary usage, the abstract noun ‘happiness’ often invites a well-being reading. And the locution ‘happy life’ may not naturally take a psychological interpretation, for the simple reason that lives aren’t normally regarded as psychological entities.