zeitgeist

Scholars have long maintained that each era has a unique spirit, a nature or climate that sets it apart from all others. In German, such a spirit is known as Zeitgeist, from the German words Zeit, meaning "time," and Geist, meaning "spirit" or "ghost." (This same Geist, when combined with poltern, meaning "to knock," led to the English word poltergeist referring to a noisy ghost.) It is common nowadays to read about something "tapping into" or "capturing" the zeitgeist, as doing so often entails popularity or profitability in appealing to a great many people, though sometimes the zeitgeist of a particular time and place is only recognized in hindsight, either due to nostalgia or with the benefit of (one hopes) greater wisdom.