English summary: This book argues that the so-called neutrality of the French state has had the perverse effect of violating any public expression of any religion, except one - resulting in the endorsement of atheism as the country's de facto religion. French description: Laicite: l'expression publique de la religion est un livre qui defend la laicite au sens originel du mot, c'est-a-dirre la liberte de conscience. Celle-ci porte en elle-meme l'expression...