Includes bibliographical references (p. 255-259) and indexes.

Preliminary Materials / P. Thom -- Introduction / P. Thom -- Chapter One. Propositions / P. Thom -- Chapter Two. Syllogism / P. Thom -- Chapter Three. Reduction / P. Thom -- Chapter Four. The Assertoric Syllogistic / P. Thom -- Chapter Five. Necessity-Syllogisms / P. Thom -- Chapter Six. Contingency-Syllogisms / P. Thom -- Appendix Kilwardby And Modern Logic / P. Thom -- Bibliography / P. Thom -- Index Of Dubia / P. Thom -- Index Locorum / P. Thom -- General Index / P. Thom.

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One of the earliest 13th-century Latin commentators on Aristotle, Robert Kilwardby (d.1279) is an original logician and an ingenious interpreter. This is the first full-length study of his Prior Analytics commentary, and the first study to work from the medieval manuscripts. Kilwardby interprets Aristotle's syllogistic within a broad ontological context that includes the four causes, and concepts of degrees of perfection. His interpretation aims to preserve Aristotle's theses as correct; and he formulates semantic and syntactic hypotheses that achieve this aim with almost total perfection. The book includes an appendix offering a modern rendering of Kilwardby's original logical ideas.