Discourse on the Arts and Sciences Discourse on the Arts and Sciences Discourse on the Arts and Sciences Discourse on the Arts and Sciences Discurso sobre las ciencias y las artes Discourse on the Arts and Sciences Discourse on the Arts and Sciences English Discourse on the Arts and Sciences Discourse on the Arts and Sciences The First Discourse Discourse on the Arts and Sciences 圖片來源：Wikimedia Commons Discurso sobre las ciencias y las artes Discourse on the Arts and Sciences English Discourse on the Arts and Sciences Rousseau English Discourse on the Arts and Sciences Rousseau 1712-78 Discurso sobre las ciencias y las artes Discourse on the Arts and Sciences