First editions and antique editions of philosophical treatises, metaphysics, logic, ethics and critical thought from humanists to modern philosophers

Sixth edition.
Spine split and worn, with small lacks at head and foot, rear board lacking, occasional light foxing.

First edition.
Spine split with lacks, small corner lacks to front cover, rear cover lacking, some foxing.

First edition.
A tiny lack at head of spine, a slight tear without loss to rear board, scattered foxing.

First posthumous edition published under the care of the author's widow.
Rare and handsome copy despite a tiny corner lack to the back cover.

First edition for which there were no large paper copies.
A good copy.

First edition.
Spine cracked with small lacks, small corner lacks to boards, some light foxing.

First edition of the second part of this conference given to the Society for the Study of Natural Sciences of Elbeuf, printed in small numbers on laid paper.
Spine sunned with three small lacks, fine interior condition.

Edition translated from German into French by Abbé Guénot.
Spines browned and cracked at foot with small lacks to spine of second volume, occasional light foxing.

Second edition with some parts in first edition, collected and arranged by P. Raynal.
Copy virtually free from any foxing.

First edition.
Rare.
Contemporary grey wrappers. Light marginal dampstaining affecting most leaves as well as the original blank covers, spine defective. Numerous leaves with folded corners.
A work of philosophical and political law, the work constitutes a refutation of Rousseau's work: The Social Contract. The author proves most serious in his analysis and reflection and pays homage to his master.