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Studia Neoaristotelica

Volume 13, Issue 3, 2016

Series Bohemoslovaca

Lukáš Lička
Pages 3-38
DOI: 10.5840/studneoar20161338

Vnímání, kauzalita a pozornost Roger Bacon a Petr Olivi

This paper investigates what conditions are to be met for sensory perception to occur. It introduces two different theories of perception that were held by two medieval Franciscan thinkers — namely, Roger Bacon (1214/1220–1292) and Peter Olivi (ca. 1248–1298). Bacon analyses especially the causal relation between the object and the sensory organ in his doctrine of the multiplication of species. In his view, a necessary condition of perception is the reception of the species in a fully disposed sensory organ. On the contrary, Olivi stresses the active role of the sensory power. A necessary condition of sensation is the aspectus — i.e. the focus of our power’s attention on the object. Furthermore, the paper investigates whether and how each of the two thinkers can deal with the arguments proposed by his opponent — namely whether Bacon’s theory is able to explain attention and what the causal role of the object in Olivi’s theory is.

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