God's Essence: Actus Purus

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The fact of God’s Existence and of His Being remains one of the greatest subjects of tension and of mystery not only in classical philosophy, but also for me in particular.

In the Old Testament, God revealed Himself to Moses by the following statement:
“I am Who am” (or depending on the translations: “I am Who I am”). - Exodus 3:14.
In Hebrew, this Name has often been related with the Name YHWH, often translated Yahweh. This has been interpreted in Catholic and Thomistic philosophy in the statement that God’s very Essence is to Exist. That is, God’s Essence and God’s Existence are identical.

My question, however, is what the term “Actus Purus” actually means.

In my understanding, it is said that in every created thing there is both potentiality and actuality. Every extant thing possesses the potential to be actualized by some agent or some thing that already possesses said actuality or said perfection.

In God, however, there is no potential. God, is Actuality Itself. But, how does this relate to the term that God is "Actus Purus"?

The way that I understand it is that "Actus Purus refers both to the facts that **God is Perfect **and that God knows no limitations in His Activity. To be more precise, it follows from this statement that, God is Omnipotent. His Being, itself, is Infinite.

When I contemplate this statement, that God is "Actus Purus, I am totally petrified. It seems to express in one statement the Utter Transcendence, the Utter Omnipotence, and the Absolute Purity of God in all His Infinite Perfections. There seems to be in this, then, a chasm, an infinite gulf that subsists between God and all creatures, and in particular, all rational creatures, both angelic and human substances. But at the same time, that gulf, that chasm, can be bridged, overcome, by the ascending pull of Grace, which Itself is a manifestation of the Divine Love.

In any case, my main question is, fundamentally speaking, what is God’s Essence?
Fundamentally or metaphysically speaking, is God’s Essence to Exist, that is, to Be, as He revealed to Moses in the burning bush?

Or is God’s Essence to Be Love, as St. John revealed by St. John in the New Testament in his First Epistle?
“God is love. Whoever lives in love lives in God, and God in him.” - 1 John, chapter 4:16:
Is Love the fundamental Essence of God, or is Existence, or Being, His fundamental Essence?

And lastly, what does it actually mean to say that, God is Good?
How does God’s Goodness relate to His Being and to His Essence? What does the statement actually mean?

While reflecting upon the above statements, I get the sense that God’s Goodness expresses one of His most fundamental Attributes, although I tend to not comprehend their meaning precisely.

Is God’s Goodness merely understood in relation to creation, to His Eternal Law and His Providence, or does it also express an aspect of His Being in Himself, of His Essence?

I hope someone can help me grasp these difficult concepts.
 
You have asked an awful lot of questions!

Actus Purus means " pure existence, " the " I am " who spoke to Moses. It is a philosophical term used by St Thomas to describe the " nature " or " essence " of God. In God there is no " composition " of " essence " and " existence " as in other " forms " which are not composed of matter and form but of form only like the soul or the forms of Angels. The human soul and the beings of Angels are composits of essence and existence - they are forms which have existence. God on the other hand is an essence which is existence, He does not have existence, He is existence. Since there is no composition in Him, even of essence and existence, He is said to be absolutely perfect.

Philosophically, we can know that God exists but we cannot know what He is. The only way we can reason to any knowledge of his " nature " is to examine his effects in nature. Every good or perfection we find in his effects we can attribute to his nature ( actuall his existence ) but in a way surpassing comprehension. Thus God is Good, He is Perfect, He is True. And all his perfections exist in His Existence as one thing - His Existence. All the perfections of nature flow from that one Actus Purus.

See the following: Linusthe2nd Aug 2, '12 6:37 pm

On line sources of Thomas Aquinas

Summa Theologica newadvent.org/summa/

Summa Contra Gentiles saintwiki.com/index.php?title=SCG_1.0

Being and Essence fordham.edu/halsall/basis/aquinas-esse.asp

Disputed Questions, De Potentia josephkenny.joyeurs.com/CDtexts/QDdePotentia.htm

Disputed Questions, De Anima josephkenny.joyeurs.com/C…/QDdeAnima.htm

Paper by Etien Gilson on the Cause of Being in Thomas A. payingattentiontothesky.com/2…tienne-gilson/

Links on Thomas Aquinas ( I have not examined these, no doubt some are defunct) aquinasonline.com/Links/

A Manual of Modern Scholastic Philosophy Vol 1, by Cardinal Mercier archive.org/details/amanualofmoderns01mercuoft

A Manual of Modern Scholastic Philosophy Vol 2, by Cardinal Mercier archive.org/details/manualofmodernsc02merc

Part 1 of the Summa Theologica would help you.

👍👍
 
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