Alexander Pruss's Blog

Aquinas’s account of location for material substance is as follows. Ordinary material substances have a special accident—one more fundamenta...

In yesterday’s post , I discussed the Real Presence in the context of relativistic time. There, I made the assumption that when Christ is re...

Jesus Christ like all human beings has an internal clock. One can measure that clock in heartbeats or in lower level physical interactions o...

Christians believe that Jesus commanded us to baptize new Christians. However, there is a fundamental division in views: some Christians (su...

I just noticed that a talk I gave on the Eucharist is available on YouTube . And there is a convenient playlist of a number of talks I'...

On Thomistic accounts of transsubstantiation, the accidents of bread and wine continue to exist even when the substance no longer does (havi...

The Eucharist has the vertical dimension of our union with Christ and a horizontal dimension of our union with our fellow Christians. The do...

According to relationalism, space is constituted by the network of spatial relations, such as metric distance relations (e.g., being seven m...

I gave a Thomistic Institute talk on the Real Presence today. Here are the slides and here is the audio. I am particularly pleased with my...

I was telling my teenage children about the at-at theory of motion: an object moves if and only if it is in one location at one time and in ...

I’ve been thinking how much nicer Leibnizian idealism is than the Berkeleyan sort, because you get this nice dose of realism from unconsciou...

The two main parts of the doctrine of transubstantiation that get philosophically discussed are that after consecration we have: Real Presen...

Here’s a fun thought experiment. By a miracle (say) I am sitting in my armchair in Waco but my causal interaction with my environment at the...

I’ve been fond of the theory that materiality is just the occupation of space. But here is a problem for that view. I have argued previousl...

Our three-dimensional space is curved, say, like the surface of a balloon--except that the surface of a balloon is two-dimensional while spa...

If Catholic teaching on the Eucharist is true, then there is a time t such that an accident of bread exists-at- t and no substance of whic...

Suppose we have a religion whose central tenets are paradoxical, verging on the contradictory. What would we expect? We might predict that t...

At least as traditionally philosophically understood, the Catholic understanding of transsubstantiation insists on the persistence...

A classic objection to transubstatiation, famously pressed by Wycliffe, is that according to the Catholic understanding of the doc...

The doctrine of transubstantiation has two primary components: The real presence of Christ's body and blood The real absenc...