Benjamin Robert Koons

Extending Alvin Plantinga’s model of warranted belief to the beliefs of groups as a whole, I argue that if the dogmatic beliefs of the Catholic Church are true, they are also warranted. Catholic dogmas are warranted because they meet the three conditions of my model: they are formed (1) by ministers functioning properly (2) in accordance with a design plan that is oriented towards truth and reliable (3) in a social environment sufficiently similar to that for which they were designed. I show that according to Catholic doctrine the authoritative spokespersons of the Church—ecumenical councils and popes—meet these conditions when defining dogmas. I also respond to the objection that the warrant of Catholic dogmas is defeated by the plurality of non-Catholic Christian sects that deny Catholic dogmas.

In the De Anima, Aristotle claims that the five senses are infallible about their proper objects. I contend that this claim means that sight is infallible about its proper object in its most specific form, i. e. sight is infallible about red or green and not merely about color in general. This robust claim is justified by Aristotle’s teleological principle that nature does nothing in vain. Additionally, drawing on Aristotle’s comparison of perception and one’s understanding of the essences, I defend a conception of the senses in which the structure of their contents is simple rather than predicative and show how this coheres better with the rest of my interpretation.