Gustave Le Bon's Opinions and Beliefs

Opinions and Beliefs (French: Les Opinions et les Croyances)‏ is a book by the French scholar of crowd psychology, or collective psychology, Gustave Le Bon, in which he discusses and examines, across nine parts, how opinions and beliefs are formed. In this book Gustave poses questions and then attempts to answer them, clarifying the differences between opinions and beliefs on the one hand and knowledge on the other.