French and English philosophers: Descartes, Rousseau, Voltaire, Hobbes ; with introductions and notes

Discourse on the method of rightly conducting the reason and seeking the truth in the sciences, by R. Descartes

Letters on the English, by Voltaire

A discourse upon the origin and the foundation of the inequality among mankind [and] Profession of faith of a Savoyard vicar. By J.J. Rousseau - - Of man, being the first part of Leviathan, by T. Hobbes