Public opinion, or popular opinion, is the collective opinion on a specific topic or voting intention relevant to society. It is the people's views on matters affecting them. The term originates from France, and first appeared in the 17th century, though writers had identified the importance of the opinion of the people long before this. Prior to the advent of mass media, public fora such as coffee houses and gentlemen's clubs were used as exchanges of opinion and some reputable locations had great influence.

Julie or the New Heloise, originally entitled Lettres de Deux Amans, Habitans d'une petite Ville au pied des Alpes, is an epistolary novel by Jean-Jacques Rousseau, published in 1761 by Marc-Michel Rey in Amsterdam. The novel's subtitle points to the history of Héloïse d'Argenteuil and Peter Abélard, a medieval story of passion and Christian renunciation.