As someone that had been writing fantasy novels for quite some time, Roy clearly had his own understanding and ideas about the supernatural.
Just like at the moment, he started to think of the current situation his body was in, on his own terms.
To be more exact, he was thinking that the Warrior Path was nothing more than the cultivation of his body, and inner energy, while training his body with it to make it stronger.
While the Mage Path was learning and understanding the laws of the Universe. Normally just understanding and learning the laws it was impossible to have this strength and outcome.
But natives of Navita seemed to be quite special, as their bodies, and their wills were able to have a much bigger effect on the surroundings, than the poor people of Earth.