Essai sur les mœurs et l'esprit des nations
Essai sur les mœurs et l'esprit des nations ( translated to English as "An Essay on Universal History , the Manners , and Spirit of Nations" ) is a work by the French writer , historian , and philosopher Voltaire , published for the first time in 1756 . 
<triplet> Essai sur les mœurs et l'esprit des nations <subj> Voltaire <obj> author <subj> 1756 <obj> publication date