11. Rousseau, Jean-Jacques.

The Basic Political Writings. Discourse on the Sciences and the Arts. Discourse on the Origin of Inequality. Discourse on Political Economy. On the Social Contract. Translated and edited by Donald A. Cress. Introduced by Peter Gay.

Indianapolis, Hackett Publishing, 1987. 15 x 23 cm. XX, 227 pages. Original Softcover. Very good condition with signs of external wear. From the library of philosopher Graham Parkes. With his name on the half title.

12. [Schopenhauer, Arthur] Magee, Bryan.

The Philosophy of Schopenhauer.

Oxford, Clarendon Press, 1991. 15,5 x 25 cm. 404 pages. Original Softcover. Excellent condition with only minor signs of external wear. From the library of philosopher Graham Parkes. With his name on the half title.

13. [Vico, Giambattista] Caponigri, A. Robert.

Time and Idea. The Theory of History in Giambattista Vico.

Notre Dame / London, University of Notre Dame Press, 1968. 8°. X, 225 pages. Original Softcover. Very good condition with only minor signs of external wear. From the library of philosopher Graham Parkes.