Italian philosopher, mathematician, and early political scientist (1743-1794) who advocated a liberal economy, personal freedoms, and equal rights. Scarce unsigned handwritten manuscript by the Marquis de Condorcet, one page both sides, 6 x 7.75, no date. A fascinating, untranslated passage on the life of important French philosopher, mathematician, and scientist Rene Descartes. In fine condition, with some light soiling and a rusty circular paperclip impression to the top. A unique manuscript linking two important French philosophers.