"The method of Vieta is followed, and much improved, by Mr. Oughtred in his Clavis [Mathematicae] (...1631.) and other Treatises of his; and he doth, therein, in a brief compendious method, declare in short, what had before been the Subject of large Volums: And doth, in few small pieces of his, give us the Substance and Marrow of all (or most of) the Ancient Geometry."