Tell him if Buddhism or Hinduism is true, he will get a other chance to get a go at getting it right, as they believe in the transmutation of the soul (reincarnation). Meanwhile, if Catholicism is true…
Seems to be he’s letting his opinions override the true teaching of the Church in his eyes.
This is dangerous, because now it’s not finding what is true and then conforming, it’s looking for a system that simply agrees with him.
Did you know, Abrahamic religions are the ones who claim to be Inspired. The Hindu vedas are the writings of sages. The Buddhist teachings are the philosophy of a sage who thought. Very profound things, but ultimately he did not even claim to be the one who is wisdom, but had to go out and learn and grow. Buddhism was originally meant for monks to focus on and sorta assumes Hinduism as true.
Catholicism is the only Church with so many miracles marking it throughout history since it’s inception. Just take St Saturninus, whose presence stopped the pagans from receiving their oracles. He was then physcially made to try to honor the pagan god, but he said, why would I fear a god that, as you say, fears me? Then they tied him to a bull and he died a martyrs death, being dragged around.
Theres many many many more things, perhaps more impressive, miracles all throughout the history of the Church, marking it. It is historically traceable to Jesus Christ Himself.
I have never heard of a supernatural miracle in other religions, perhaps præternatural miracles, but even devils can do those.
Now, Catholicism is just completely fulfilling, and holds the Truth in fullness.