Cartesian dualism presupposed an independent reality "out there" that remains undisturbed during scientific observation. Heisenberg's uncertainty principle removes the partition separating mind from matter, rendering a fatal blow to Cartesian dualism.
So are you a dualist? Most scientists reject the notion that the mind has an immaterial substance that's unlike the physical world. Instead, they argue that the mind somehow emerges from the squishy matter called the brain -- a philosophy called physicalism.
Instead of labeling the other person or our ourselves as bad or wrong, see this as an opportunity or contrasting life situation that will allow you to build a bridge to a better place, a more desirable moment.
Devotion might look like what a student has with a teacher or an aspirant has with a guru. The teacher must be high minded and the guru must be the best kind with the highest goals of the student in mind.