Yet it’s clear that intellect exists in other animals. What seems to set humans apart from other animals is imagination - the ability to compass and believe things that do not actually exist.
What you
re calling imagination is part of the intellect; and a vital part of it. The ability to have concepts of things that do, or do not, exist, and abstract realities, but are outside of our immediate awareness: cat, dog, stars, life, death, self-awareness ad infinitum. In other words, the other animals dont have intellects.
If your definition of the word “intellect” says otherwise: so be it.

i
ll stick with the Churchs
Because i believe in the existence of the immortal spiritual soul, with its intellect and will. That Science can
t detect it doesnt disprove its existence. This belief didn
t happen overnight; but grew over decades. A buildup of evidence. Its not the sort of thing which can be answered in a handful of words.
Why don
t you start a thread in this philosophy sub-forum. im not a philosopher.
In what ways are our brains ‘defective’?
Our brains limit the activity of our intellects.
They prevent us from being directly aware of the Supernatural.
How do we know that the soul even exists, let alone undertakes any activity, if we can’t detect it?
Because of your perspective (pantheistic), there
s probably no point in saying anything; but its a pretty stunted “Reality” if it consists only of an impersonal universe, with some very limited sentient beings!

The spiritual opens it up, and gives it ultimate meaning, even if we humans can`t fully grasp it in this life.
What is the difference between a genuine mystical experience and a delusion? How do you know such ‘experiences’ are not defects of the brain? With what might you compare them?
That
s for the Church to work out, with her 2,000 years of Holy Spirit-guided wisdom. Its beyond the competence of individuals. Yes, i do believe in the Catholic Church.
Because you
re a pantheist, were on different wavelengths. And, as a pantheist, how do you “know” what you believe is right?
Again, i
m not a philosopher. Start a separate thread on all of this. Its one thing to be convinced: it`s another thing to put it into words.
Will without the ability to do anything must be incredibly frustrating…
God is “only” spirit, and yet, is omnipotent. His intellect and will are so powerful (infinite) that He brings Creation into being.
And, no: He can
t will Himself out of existence, or reduce Himself in some way...... He cant make Himself anything less than Infinite.
He`s eternal, and outside of space and time.
The nature of the angels means that they
re not restricted to a specific point in space: theyre not in space at all. A spirit is wherever his intellect and will are focused; but that
s speaking metaphorically; so a spirit can "move" at the speed of thought. Not exactly restrictive! The angels have such powerful intellects and wills that they can "do" things: eg manipulate matter to form an image. Theres awareness of all of the other angels, plus, of course, the Beatific Vision (of God)!
Being spirit, our souls aren
t in or beside our bodies: theyre focused (intellect and will yet again) on them, animating them.
Not being able to comprehend the spiritual doesn
t mean it doesnt exist.
That seems a little late to be investing belief in such things here and now.
In what way?
There
s a book titled "Theology and Sanity" by Frank Sheed, and published by Ignatius Press. It covers all of this, and a lot more. i cant find it right now to quote from it; so i
m crippled! :blush: ***Sorry!*** i cant do any better without reference to that book…