Autograph letter from Voltaire to Frederick II, written from château de Ferney and dated 21 November 1770.
Detailed Summary:
The manuscript is a draft of a letter praising Frederick II, especially his virtues of hospitality and kindness. Additionally, the author draws parallels between the potential for passionless love for God and that for mathematical truths.
Fernand Caussy, Inventaire des manuscrits de la bibliothèque de Voltaire conservée à la bibliothèque impériale publique de Saint-Pétersbourg (Geneva, Slatkine reprints, 1970)