The Oxford University Studies in the Enlightenment series, previously known as SVEC (Studies on Voltaire and the Eighteenth Century), has published over 500 peer-reviewed scholarly volumes since 1955 as part of the Voltaire Foundation at the University of Oxford. International in focus, Oxford University Studies in the Enlightenment volumes cover wide-ranging aspects of the eighteenth century and the Enlightenment, from gender studies to political theory, and from economics to visual arts and music, and are published in English or French.

Following his traumatic departure from the court of Frederick the Great, Voltaire wrote "L'Orphelin de la Chine", a play later identified as a turning point in French theatre from the point of view of costume and set design. As he settled in Switzerland, he composed the "Epitre de l'auteur, en arrivant dans sa terre pres du lac de Geneve". Yet he remained alert to goings-on in the outside world: in Italy, with the "Examen du Testament politique du cardinal Alberoni", in Portugal, with the "Poeme sur le desastre de Lisbonne", which grapples with the problem of human suffering and foreshadows "Candide", and in Austria and Hungary, with some shorter poems.

The texts in this volume date from 1769. Voltaire, energetic despite his 75 years, continues his struggle against 'l'infame' and promotes tolerance. There is also an epitre against atheism, containing his famous line 'Si Dieu n'existait pas, il faudrait l'inventer'. There are attacks on abuses by the clergy and on figures he considered the enemies of Enlightenment, including Malebranche and Jean-Jacques Rousseau, but also a celebration of the glories of French literature.

Il serait difficile d'exagerer l'importance de Turgot, controleur general des finances de Louis XVI, pour les oeuvres de Voltaire en 1775-1776. Lorsque Voltaire n'est pas en train de louer ses reformes, il s'adresse au roi et a son ministre en faveur du pays de Gex et envisage d'interceder pour les serfs de Saint-Claude. Meme apres la disgrace de Turgot, Voltaire projette une edition de ses edits en son honneur. En meme temps, Voltaire ecrit sur les civilisations chinoises et indiennes qu'il admire tant.