Abstract
This volume in the series ORBIS ACADEMICUS: Problemgeschicten der Wissenschaft in Dokumenten und Darstellungen, marks the first attempt to give a comprehensive history of logic since the monumental work of Prantl. In sharp contrast with that work, it does not share the opinion, voiced by Kant, that logic has no history after Aristotle; it uses the results of very extensive research into the history of ancient and scholastic logic, especially during the last 25 years; most important of all, it is written with full knowledge of modern mathematical logic which was only beginning in Prantl’s time, and finally it also includes an account of Hindu logic.