You have distinguished between the body and the soul of man, the soul being a spirit. Yet how can a man belong to the material and the spiritual worlds at once? They exclude each other.

The Catholic Answers

A material world cannot be a spiritual world, nor can a spiritual world be a material world. But the two can exist simultaneously, even as in one man’s head we have material brains and spiritual thoughts. We cannot say that a man’s material brains so fill a man’s head that they leave no room for thought. Even in purely physical things you can have material copper and electric force occupying the same wire. They are in different orders of being.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty