You contradict yourself through and through
This is the problem and the key. A self-contradicting position is irrational. An irrational position, definitionally, cannot be rationally held. A position that cannot be rationally held cannot be argued for or defended. Logos is the key to logic / reason, and Logos is the key to argument / dialogue. To claim that there are no universals is a universal statement and thus self-contradicting. To argue that action that we understand / perceive as coming from free agents is only a response to other movements, and anything about this that might be perceived as "free" is mere illusion, is to undermine the legitimacy of both language and argument - and therefore the position is self-contradicting, ergo it is irrational. And one cannot dialogue without accepting the same premises, and those premises have to be rational to lead anywhere. We can accept as a premise that a circle can simultaneously be a square, but it will lead us nowhere.
I agree that some of the things @Energy-in-Motion says may be substantive in certain ways, but they are so bogged down by bad (in fact, self-contradicting!) philosophy that it is scarcely worth addressing. Indeed, he simply has to go back to the drawing board. I recommend starting with Book Epsilon (classics.mit.edu) of Aristotle's Metaphysics.
To claim that there are no universals is a universal statement and thus self-contradicting.
Destroy Relativism in one easy step! Here’s how.
Modernists hate this man! One weird trick...
To argue that action that we understand / perceive as coming from free agents is only a response to other movements, and anything about this that might be perceived as "free" is mere illusion, is to undermine the legitimacy of both language and argument - and therefore the position is self-contradicting, ergo it is irrational.
Bingo. You can't tell people that you can't say true and false things, else why should they take seriously what you're telling them? Sophistry!
Feser's Scholastic Metaphysics is damn good as well, for anyone that prefers more up-to-date language, as well as the elaborations that the Scholastics added. There are some people doing really serious Scholastic metaphysics in professional philosophy, but Feser is able to make it approachable. That's just my opinion.
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