Contents: Introduction -- Translator's Note -- Bibliography -- Chronological Table -- PRIVATE THOUGHTS -- DISCOURSE ON THE METHOD [much abridged] -- MEDITATIONS ON FIRST PHILOSOPHY -- First Meditation -- Second Meditation -- Third Meditation -- Fourth Meditation -- Fifth Meditation -- Sixth Meditation -- OBJECTIONS AND REPLIES, THE THIRD SET -- On the first Meditation -- On the second Meditation -- On the third Meditation -- On the fourth Meditation -- On the fifth Meditation -- On the sixth Meditation -- RULES FOR THE DIRECTION OF THE MIND [much abridged] -- PRINCIPLES OF PHILOSOPHY [much abridged] -- I. First Philosophy -- II. Principles of Material Things -- III. The Visible World -- IV. The Earth -- THE DIOPTRICS [much abridged] -- LETTERS -- APPENDICES -- I. Descartes's Elucidations of Cogito ergo sum -- II. On Innate Ideas