Overview

The Questiones libri Porphirii is a commentary on Porphyry's Isagoge by the fourteenth-century logician Thomas Manlevelt. It is edited here in full. Not much is known of Thomas Manlevelt, but his work is remarkable enough. Following in the footsteps of William of Ockham, Manlevelt stresses the individual nature of all things existing in the outside world. He radically challenges our conceptional framework. He applies Ockham's razor in a ruthless manner to do away with all entities not deemed necessary for preservation. In the end, Manlevelt even maintains that substance does not exist. In this text early Ockhamism is being pushed to its extremes.

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Reviews

This whole treatise (...) will repay further study, and it will be good to see Manlevelt's Categories commentary given similar careful treatment. Stephen Read (University of St. Andrews), Review of Metaphysics, Vol. 69, 2, December 2015

This whole treatise (...) will repay further study, and it will be good to see Manlevelt's Categories commentary given similar careful treatment. Stephen Read (University of St. Andrews), Review of Metaphysics, Vol. 69, 2, December 2015

Author Information

Alfred van der Helm received his Ph.D. from Leiden University in 2012. From 1993 until 1996 he was a teacher in Philosophy at Parahyangan Catholic University in Bandung, Indonesia. He is currently preparing an edition of Thomas Manlevelt’s commentary on the Categories.

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