Un ouvrage introspectif sur l'art d' tre heureux dans la vie quotidienne, la mani re de cultiver son propre bonheur et d'en faire profiter les autres, crit par Joseph Droz, un crivain suisse du XIXe si cle. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations...