Abstract
“The composition of the lectures of which Aristotle's extant works are the notes probably belongs in the main to the twelve or thirteen years of tail headship of the Lyceum, and the thought and research implied, even if we suppose that some of the spadework was done for him by pupils, implies an energy of mind which is perhaps unparalleled. During this time Aristotle fixed the main outlines of the classification of the sciences in the form which they still retain, and carried most of the sciences to a further point than they had hitherto reached; in some of them, such as logic, he may fairly claim to have had no predecessor, and for centuries no worthy successor…one of the greatest of analytic thinkers. “SIR W. DAVID ROSS, Aristotle.