Agency Arguments: Do reasoning and moral choice prove you have a nonphysical mind?
Rational agency is what we call our reasoning ability, and it seems to be different from mimicry, but the two aren't physically different. This seems to show we are non-physical. Moral agency is our faculty for deliberating between goods. Again, this seems physically identical to mimicry, so its existence seems to show we are non-physical.
NOTES
Further Reading
Mind, Matter, and Nature: A Thomistic Proposal for the Philosophy of Mind, James D. Madden