Someone once asked Saint Dominic why he kept his eyes lowered to the ground during most the day.
The saint’s response: “So that my eyes might be pure when I one day behold the Blessed Mother.”
Incidentally, here is a good custom for men who try to keep their eyes and hearts pure. I have memorized the following Bible verse and I recite it when I am tempted by the eyes:
“I have made a covenant with my eyes, that I would not so much as look upon a virgin” (Job 31:1)…