A3 Book section, Chapters in research books
Perceptual errors in late medieval philosophy (2019)

Silva, J. F., & Toivanen, J. (2019). Perceptual errors in late medieval philosophy. In B. Glenney, & J. F. Silva (Eds.), The Senses and the History of Philosophy (pp. 106-130). Routledge. https://doi.org/10.4324/9781315184418-10

JYU authors or editors

Publication details

All authors or editors: Silva, José Filipe; Toivanen, Juhana

Parent publication: The Senses and the History of Philosophy

Parent publication editors: Glenney, Brian; Silva, José Filipe

ISBN: 978-1-138-73899-7

eISBN: 978-1-315-18441-8

Publication year: 2019

Pages range: 106-130

Number of pages in the book: 376

Publisher: Routledge

Place of Publication: Abingdon, Oxon

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.4324/9781315184418-10

Publication open access: Not open

Publication channel open access:


The details of the process in which the information from the object reaches the perceiver vary according to different theories. However, before the fourteenth century most medieval philosophers accepted, mostly without further ado, the basic realistic assumption that the senses are reliable. The aforementioned transmission errors are based on the realist principle that unless there is something wrong in the medium or in the senses themselves, external things are perceived as they really are and believed to be so. When all of the preconditions have been fulfilled, they then constitute the ideal conditions for visual perception, but they must be understood in relation to real things in the world, as optimal conditions for perceiving the object by the perceiver in these circumstances. Peter Auriol argues explicitly that the circle that appears in the air does not have a real being in the stick, as that would mean that the stick is circular.

Keywords: Medieval philosophy; realism (philosophy); perceptions (mental objects); visual perceptions

Free keywords: Petrus Aureolus

Fields of science:

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 3

Last updated on 2022-19-08 at 19:54