there are quite a few priests especially jesuits who went to japan and studied zen, thomas merton david steindl-rast spring to mind i can see zen meditation has a use as meditation is not at the front in catholicism, lots of books have been written on the subject ,zen catholicism,zen spirit christian spirit, i used to be very interested in the area,i am thinking of starting zen again, it is a minefield, lots of food for thought good luck