Patristic
“(Nilus Monac.) For the frequent looking upon the things which we have forsaken, through the force of habit draws us back to our past way of life. For practice has great power to retain to itself. Is not habit generated of use, and nature of habit? But to get rid of or change nature is difficult; for although when compelled it for a while turns aside, it very rapidly returns to itself.”
Catena Aurea: Gospel of Luke, as excerpted in the Catena Aurea on Luke 9:57-62
PD · J. H. Newman (Oxford, 1843) ↗