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Work · Ancient Greek

Organon

c. 350 BCE · by Aristotle

The logical writings: categories, syllogistic, theory of demonstration.

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Introduction

Organon (“tool”) is the name later commentators gave to Aristotle’s six logical works: the Categories, On Interpretation, the Prior and Posterior Analytics, the Topics and the Sophistical Refutations. The title expresses a view of logic as the instrument of all the sciences rather than a science of its own. The Prior Analytics contain the first formal theory of inference, the syllogism; the Posterior Analytics ask what scientific proof requires; the Topics and Refutations deal with debate and fallacies. Through Boethius’ Latin translations – of which only those of the Categories and On Interpretation circulated widely before the twelfth century – the Organon became the basis of logic teaching in medieval schools and universities.

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