The First Substance according to Aristotle is a specific individual physical entity. For example, a particular book…( space )…
So how is the Second Substance anything other than an abstract categorization?..?
Your last paragraph has the two kinds of substance reversed. Second Substance is the collection of visible and measureable parts and underlying ultimate particles organized into a specifice structure and having specific powers and habits. Second Substance inheres in First Substance. First Substance is a concept only as considered as the general idea the intellect has of a particular essence. It is instantiated in specific entities, but imperfectly, as individualized by the particular matter and particular form which are its principles or causes. It is real and not a concept when instantiated in a substance.
You have to keep in mind that the entire second substance is one large collection of accidents. You can say the entire second substance is an accident. The underlying form and matter could have any number of accidents, as expressed in second substance. Or, the second substance by comprised of quite a wide variety accidents. Of course that is to be understood as variety within defined limits, which do not pass beyond the possibilities of a given form.
Everything which exists has a First and Second Substance, except God, considered in His Essence.
The examples of first and second substance are as varied and numerous as things which acutally exist ( every substance must actually exist, have an act of existence. ). Of course it is undestood that ultimate particles would be open to dispute, even among scientists. But the essential point is our concern.It is the real underlying
form of any
first substance that determines the accidents and variety accidents comprising second substance. Each man has the
form, man, but as limited by the matter which recieves it. But each
form has generic, specific, and differentia as determined by God and other factors ( inherited genes, etc. ).
When the bread and wine are changed into the body and blood of Christ, the entire substnace of Christ, the first substance and the second substance, comprising the totality of his accidents becomes present. But only the accidents of the bread and wine remain, but they have no first substance in which they exist ( this is a miracle). So Christ is physically present in his totality, but he is not a part of the accidents of bread and wine, nor are they part of him. One can say he accompanies the bread and wine wherever they are, they provide a vehicle for his presence. They serve as a
Sign of his presence. And when the accidents are dissolved or are absorbed by the body through digestion, Christ is no longer physically present.
Your point about the accidents of the bread and wine being real substances is correct, but remember that they are second substances, a collection of organized accidents. But in this instance they are present by a miracle. Because in nature accidents always exist in an underlying first substance, they never exist alone. They look like bread and wine, and pass all the criteria for real things. But, in this case only, they are simply accidents.
Now this is not an argument between science and the Church. I have no problem and the Church has no problem with science calling the bread and wine, after the Consecration, real substances in the proper sense. But the Church would say, in this one instance science is wong. But to see that one must have Faith. As long as science doesn’t stray into the province of Faith and say the Church is wrong and make a big deal of the difference and use that as an excuse to ridicule the Church, I have no problem with what science teaches. In fact it should not come up in any scientific discussion. It is really only Catholic scientists or purely Aristotelian philosophers who might raise the issue - and of course atheists and agnostics and others who might be looking for an excuse to make a fuss. But gentlemen allow room for Faith.
So the First Substance does not change, since the bread continues to be the same discrete arrangement of atoms. These particular atoms are not swapped out with other particular atoms of the exact same type and arranged in the exact same way. The accidents don’t change, since they still arise from the same arrangement of atoms. But the Second Substance does change? Since the Second Substance is just an abstract grouping, why is this a miracle?
You have the two substances reversed. And no, First Substance is not just abstract, as I explained above.
And what exactly do you mean by a veil? …( space )…?
" Veil " is just a similie, a metaphore to describe what happens. Christ is where the accidents are, but he is not a part of them, nor they of him. They are merely a
Sign of his presence.
So if a miracle…how does one reliably distinguish between a miracle and a falsehood?
It requires Faith in Christ’s own Word as interpreted by the Church who has been promised by Christ to be infallible in matters of Faith and Morals.
And just so we’re clear…( space )…
The Church’s teaching in the matter requires Faith, I don’t dispute that. The Church merely uses Aristotelian philosophy, as interpreted by Thomas Aquinas to describe what is happening in this one instance. I would argue however that Aristotle would argue validly that all the accidents and their powers and properties are sourced in the matter and form of the First Substance. In other words the way ultimate particles behave is determined by the
form of the first substance from which they are derived. In other words, whatever happens in second substance is determined by the first substance.
Deep stuff, hey! Thank you for your interest.
Linus2nd