Rene Descartes and Rene Lalique are two famous French figures. Descartes was a philosopher, mathematician, and scientist who is best known for his philosophical work, 'Meditations on First Philosophy'. He is also credited with the development of Cartesian dualism, which posits that the mind and body are two distinct entities. Lalique was a renowned French glassmaker and jeweller who is known for his Art Nouveau designs. He is particularly famous for his glass sculptures and jewellery pieces, which often featured intricate floral motifs.