Recommended translation: “Letter from J.J. Rousseau to M. de Voltaire,’ in Rousseau: The Discourses and other early political writings, ed. and trans. by Victor Gourevitch (Cambridge: Cambridge University Press, 1997), 232-246.
Rousseau’s “Letter to Voltaire,” originally published in 1756.
Rousseau to Voltaire, 18 August 1756, from J.A. Leigh, ed., Correspondence complète de Jean-Jacques Rousseau, vol. 4 (Geneva, 1967), pp. 37-50; translated by R. Spang.
Online:
Amazon (Recommended translation)
Indiana University (Free access; excerpted)