  Albert of Saxony’s teachings on logic and metaphysics were extremely influential. Although Buridan remained the predominant figure in logic, Albert’s Perutilis logica was destined to serve as a popular text because of its systematic nature and also because it takes up and develops essential aspects of the Ockhamist position. But it was his commentary on Aristotle’s Physics that was especially widely read. Many manuscripts of it can be found in France and Italy, in Erfurt and Prague. Thanks to Albert of Saxony, many new ideas raised in Parisian physics and cosmology in the later Middle Ages became widespread in Central Europe. Albert’s Physics, much more than Oresme’s and even Buridan’s, basically guaranteed the transmission of the Parisian tradition also in Italy, where it was authoritative along with the works of Heytesbury and John Dumbleton. His commentary on Aristotle’s De caelo was also influential, eclipsing Buridan’s commentary on this text. Blasius of Parma read it in Bologna between 1379 and 1382. A little later, it enjoyed a wide audience at Vienna. His Treatise on Proportions was often quoted in Italy where, in addition to the texts of Bradwardine and Oresme, it influenced the application of the theory of proportions to motion. 