[GRAVESANDE], Introduction à la philosophie, 1748

Willem Jacob's Gravesande (1688 – 1742) was a Dutch jurist and diplomat, known today for his scientific work: he contributed to the introduction of Newton's theories and the experimental method. Interestingly, Gravesande presents his revolutionary method of coding and decoding encrypted letters ("De l'art de déchiffrer des Lettres", p. 391-408).