Skip to content

Search Results for: Richard of St. Victor

A formulation of Leibniz’s Law / the Indiscernibility of Identicals

In discussing the Trinity or Incarnation, I often have an exchange which goes like this:

  • someone: Jesus is God.
  • me: You mean, Jesus is God himself?
  • someone: Yeah.
  • me: Don’t you think something is true of Jesus, that isn’t true of God, and vice-versa?
  • someone: Yes. e.g. God sent his Son. Jesus didn’t. God is a Trinity. Jesus is not a Trinity.
  • me: Right. Then in your view, Jesus is not God.
  • someone: But he is.
  • me: So, you think he is, and he ain’t?!
  • someone: [silent puzzlement]

In this post, I want to explain the part in italics. First: a point of clarification. The second and third lines are important. When many say “Jesus is God” they just mean that in some sense or other Jesus is “divine.” (This could mean a lot of things, depending on one’s assumed metaphysics.) But this sort of person (line 3) understands Jesus to be “divine” in the sense of just being one and the same as God – that Jesus is God himself – one person, so just one (period).

In the italicized line, I’m applying  something called Leibniz’s Law, or the Indiscernibility of Identicals. I sometimes put this roughly as, some x and some y can be numerically identical only if whatever is true of one is true of the other. That’s a sloppy way to put it.

In logic, a more precise way of stating it (used e.g. by Richard Cartwright) is:

(x)(y)(z) ( x= y only if (z is a property of x if and only if z is a property of y))

Literally: for any three things whatever, the first is identical to the second only if the third is a property of the first just in case the third is a property of the second.

The basic intuition is that things are as they are, and not some other way. So if x just is (is numerically the same as) y, then it can’t be that x and y qualitatively differ. This seems undeniable.

There are a few problems, though, with the above formula, which any person trained in philosophy may spot. Read More »A formulation of Leibniz’s Law / the Indiscernibility of Identicals

“Incarnation” @ the Internet Encyclopedia of Philosophy (Dale)

brilliant

Kudos to the team at the Internet Encyclopedia of Philosophy, for

  1. their recent radical re-design, done by Josh D. May. Notable improvements include a nice print-friendly page feature, and the entries sorted by topic. Here are the Philosophy of Religion ones.
  2. their new entry “Incarnation”, by University of Wisconsin Madison PhD David Werther, who teaches in their division of Continuing Studies. He does an excellent job of keeping it simple; it’s a brief and clear introduction to the Incarnation as treated by analytic philosophers, and is by design pretty ahistorical.

Missing in #2 are references to, if not summaries of, Tom Senor’s work, particularly his criticisms of the Stump/Leftow property-borrowing approach, and of the hoary qua-move. Maybe a couple of references to Hick would be appropriate as well, e.g. his criticism of two-minds theories. Positively, maybe a reference to van Inwagen on relative identity. But on the whole, I thought it was well done – congrats to David. And I hope we see more philosophical theology in the IEP.

One quick reflection:Read More »“Incarnation” @ the Internet Encyclopedia of Philosophy (Dale)

podcast 87 – Kermit Zarley on the deity and preexistence of Jesus

In this second conversation, Mr. Kermit Zarley and I discuss a number of themes from his book The Restitution of Jesus Christ, including
the evangelical tradition of saying that “Jesus is God” or “Jesus is divine,” the biblical phrases “Son of God” and “the Son of God,” the texts commonly read as teaching that Jesus existed before his conception in Mary.

a new proof of God’s existence, with an assist from Dr. Bart Ehrman?

In the last week of my recent Introduction to Philosophy class, two teams of students debated the existence of God in front of the class. After the debate the rest of the students wrote a short response to the debate. While the pro-God side had offered versions of the design and ontological arguments, one student opined in his written response that they had overlooked the obvious.… Read More »a new proof of God’s existence, with an assist from Dr. Bart Ehrman?

analytic theologian Oliver Crisp on the coherence of Incarnation

Somehow I missed this when it came out back in July. Our friend the Tentative Apologist Randal Rauser has a podcast (itunes) now, and he’s done a substantial, no-bs interview of leading Reformed analytic theologian Oliver Crisp, of Fuller Seminary. Listen to it at Randal’s blog here. Crisp does a good job presenting and giving a basic defense of the coherence of the traditional catholic… Read More »analytic theologian Oliver Crisp on the coherence of Incarnation

The Maverick Philosopher: Are the divine persons parts of the triune God?

I missed an excellent post by our friend the Maverick Philosopher back in January: …if the proper parts of a cat can be feline in the very same sense in which the cat is feline, without themselves being cats, then we have an analogy that renders intelligible the claim that the Persons of the Trinity are divine without being Gods.  The picture is this:  God or the… Read More »The Maverick Philosopher: Are the divine persons parts of the triune God?

trinitarian or unitarian? 10 – Hippolytus on the identity of the one God

hippolytusIncredibly, in 1551 they discovered an intact statue of Hippolytus (pictured here). This may exist because he was revered as a martyr shortly after his lifetime.

In the previous post, we saw that in his theology, the divine (but less divine than God) Logos came to exist from God a finite time ago, so that God could create the cosmos by means of him. On two counts, then, this makes him not a trinitarian – that the “persons” are neither co-equal nor equally divine. But is he a unitarian?

In the most important work we have from him, he says,

The first and only (one God), both Creator and Lord of all, had nothing coeval with Himself… Therefore this solitary and supreme Deity, by an exercise of reflection, brought forth the Logos first… Him alone He produced from existing things; for the Father Himself constituted existence, and the being born from Him was the cause of all things that are produced. The Logos was in the Father Himself, bearing the will of His progenitor, and not being unacquainted with the mind of the Father. For simultaneously with His procession from His Progenitor… He has, as a voice in Himself, the ideas conceived in the Father. …when the Father ordered the world to come into existence, the Logos one by one completed *each object of creation, thus pleasing God.   …[God, via the Logos] formed the ruler of all [creation, i.e. Adam]… The Creator did not wish to make him a god, and failed in His aim; nor an angel… but a man. For if He had willed to make thee a god, He could have done so. Thou has the example of the Logos. Read More »trinitarian or unitarian? 10 – Hippolytus on the identity of the one God

John Hick - philosopher

Is the doctrine of the Incarnation prior to & the source of trinitarian doctrine? – Part 2

An interesting and much more recent statement from John Hick, along the lines of my last post. …Since then [around 1993] the focus of much theological discussion has moved from christology to the doctrine of the Trinity. This is partly because theology always does go the rounds of the traditional topics – creation, sin, incarnation, atone­ment, Trinity, church, heaven and hell – and after a… Read More »Is the doctrine of the Incarnation prior to & the source of trinitarian doctrine? – Part 2

Is the doctrine of the Incarnation prior to & the source of Trinitarian doctrine? – Part 1

I was reading famous philosopher of religion John Hick‘s contribution to the 1982 book The Concept of Monotheism in Islam & Christianity, and ran across an interesting idea. Let me put it in context. If you know anything about Hick, you can guess that in his chapter he’s is ultimately trying to promote his unique theory of religious pluralism. Here’s the connection he sees between… Read More »Is the doctrine of the Incarnation prior to & the source of Trinitarian doctrine? – Part 1

podcast 118 – The Son of God 2 – Mr. Danny Andre Dixon’s “Arian” view of Jesus

Many Christians in the 2nd to the 4th centuries, and many since, have read the famous opening of the gospel according to John like this: In the beginning [i.e. at the Genesis creation, but not necessarily before] was the Word [i.e. the pre-human Jesus], and the Word was with God [i.e. the Father], and the Word was divine.