Robert Burton (d. 1640) wrote in The Anatomy of Melancholy that " Scaliger and Cardan admire Suisset the calculator, qui pene modum excessit humani ingenii [whose talents were almost superhuman]". Gottfried Leibniz wrote in a letter of 1714: "Il y a eu autrefois un Suisse, qui avoit mathématisé dans la Scholastique: ses Ouvrages sont peu connus; mais ce que j'en ai vu m'a paru profond et considérable." ("There was once a Suisse, who did mathematics belonging to scholasticism; his works are little known, but what I have seen of them seemed to me profound and relevant.") Leibniz even had a copy of one of Swineshead's treatises made from an edition in the Bibliothèque du Roi in Paris.