Subscribe via RSS Feed Connect on Pinterest Connect on Google Plus Connect on LinkedIn

The Subsistent Soul: Are You More than Particles?

April 12, AD2015

Kelli - ceiling

The word “subsistent” is tricky. Modern day dictionaries define “to subsist” as “to be sustained,” or “to maintain existence” or “to support or maintain with provisions or funds, to support.” This meaning is consistent with the word’s etymology. In classical Latin, subsistere meant “to stand firm” or “to come with relief or support.” In post-classical Latin the word meant “to exist as a substance,” or more simply, “to be.” This is how St. Thomas Aquinas used the word in the Summa Theologiæ (First Part, Question 75, Article 2). After he proved the soul is immaterial, he asked, “Whether the human soul is something subsistent (subsistens)?” Does the human soul exist as a substance, rather than emerge as some property of matter?

In daily life, we don’t spend a lot of time thinking about that question, but much of the gamut of modern physical and biological sciences assumes the soul does not exist. The unproven postulate that nothing immaterial can exist because science cannot measure or observe the immaterial pervades this scientific age. It is true, the science of material things is limited to what is material; but it is an error to stretch that assumption beyond science and to call that assumption dogmatic truth.

How did St. Thomas prove the subsistence of the soul? He cited St. Augustine’s fifth century treatise, On the Trinity (Book X, Chapter 7). Quoting:

“Now, in the case of all these opinions, any one who sees that the nature of the mind is at once substance, and yet not corporeal—that is, that it does not occupy a less extension of place with a less part of itself, and a greater with a greater—must needs see at the same time that they who are of opinion that it is corporeal do not err from defect of knowledge concerning mind, but because they associate with it qualities without which they are not able to conceive any nature at all.”

In other words, as long as we try to picture the soul, we will try to define it as a body accessible to our senses. We have to go beyond mental images (i.e. imagination) and launch our minds into the abstract (i.e. conception). Because we have to do that, we prove to ourselves that the soul, who knows itself, is not an emergent property derived from sensory chemicals interacting with the brain.

I’m trained as a scientist, and let me tell you, it has taken years for that to even begin to sink in. It was a stumbling block, as they say, for faith. Logical arguments do not satisfy me like hard data does because hard data has a way of imposing itself on the researcher. “Show me,” the incurable reductionist says, “put it there on the table, and let me analyze it for myself.” How do you put logic on the table? (Which is kind of the point.) St. Augustine and St. Thomas wrote out the reasoning for us to follow, if we let ourselves go there.

What they wrote, I think, comes down to a question we must ask ourselves. “Am I more than particles?” Because if my subsistent soul is the very life of my body beyond my senses, then my soul is immortal and the materialist world order is turned on its head. If I am just particles? I don’t know. I never could reconcile that assumption with what I know, deep in my heart (but not the material heart), to be true. The answer here is not just definitional—it cuts right to the truth of our existence as persons rather than machines. It goes straight to the question of faith beyond the material world.

Photography: See our Photographers page.

About the Author:

Stacy Trasancos has a PhD in Chemistry from Penn State University and a MA in Dogmatic Theology from Holy Apostles College and Seminary, is a chemistry and physics instructor for Kolbe Academy, adjunct professor at Holy Apostles, and author of Science Was Born of Christianity: The Teaching of Fr. Stanley L. Jaki. Most of her time is devoted to raising her youngest five children, and worrying about her two oldest, with her husband in a 100-year old restored mountain lodge in the Adirondack mountains. Interact with her on Facebook or Twitter. Visit her website.

If you enjoyed this essay, subscribe below to receive a daily digest of all our essays.

Thank you for supporting us!

  • Thanks for an excellent philosophical exposition of substance. It has always puzzled me how those who claim we are just a set of particles, can propose that ‘fact’ as true and its denial as false when only particles subsist.

    • SclrHmnst

      There is the material universe and there is the appearance of an immaterial universe that some refer to as the spiritual, metaphysical, supernatural, etc. world (or universe or realm…).

      Like some think of something like Love and see it as something other than the result of a natural physical process. They give Love an existence of its own when really it is an emotion generated by the workings of the brain in a sentient being, including a human.

      The material universe is subject to natural laws and constants. These laws and constants either always existed or came into being when this universe did. We know nothing beyond that.

    • How can you claim there are natural laws and constants, if anything beyond the material universe is merely an appearance, unless these laws and constants are merely appearances of an imaginary and immaterial, scientific universe, just as some refer to a spiritual or metaphysical universe?
      Some think of natural laws and constants and see something other than the result of a natural process. They give these laws and constants an existence of their own when really they are expressions of emotion generated by the workings of the brain in a sentient being, including a human.
      Disagreement in com boxes do not differ from dogs barking at each other.

    • SclrHmnst

      When we identify laws and constants, all we are doing is describing how this universe operates. For some unknown reason, it operates in an intelligible and consistent manner. Finding that reason is the pursuit of both science and religion. Religion took a primitive stab at it and we know that is all wrong. Science will continue to pursue it probably forever.

    • “Finding that reason is the pursuit of both science and
      religion. . . . Science will continue to pursue it probably forever.”

      Your blind faith in science appears to be intelligent and honest. However, we know that it is nothing other than physical and chemical activity in the brain of a sentient being, i.e. a set of particles, which set, in this case, we
      would probably label as human. I should avoid using ‘being’, for fear the set of particles would be construed as substance or person. Identifying some particles as a set is arbitrary, but mathematical and, thereby, scientific.

    • SclrHmnst

      There is much yet to be learned about life as we know it. Religion, philosophy, art, science all make attempts to define and express it. I just think religion is stuck in archaic paradigms that make it less adaptable to new information and ideas.