"They are all soul, ignoring their bodies; let’s be all body, ignoring our souls."
It will be interesting to see if Mettrie walks this statement of his back or carries it further because the rest does look very promising.
His book "Natural history of the soul" will show you that part of his project is to convince people that the soul is 1. physical / natural, and 2. mortal, and his study of the faculties of the soul will furthermore show you how familiar he is with the Epicurean canon.