Translators' Note.- Biographical Sketch.- An Analysis of Chaadaev's Major Ideas.- The Philosophical Letters Addressed to a Lady.- Letter I.- Letter II.- Letter III.- Letter IV.- Letter V.- Letter VI.- Letter VII.- Letter VIII.- The Apologia of a Madman.- Fragments and Diverse Thoughts.- Commentaries and Notes to the Biographical Sketch.- Commentaries and Notes to the Analysis of Chaadaev's Ideas.- Commentaries and Notes to the Philosophical Letters.- Commentaries and Notes to the Apologia of a Madman.- Commentaries and Notes to the Fragments, Articles and Other Letters.