Holy Man or Hollow Man?

From Keillor’s The Book of Guys

In America, you don’t have to know what you’re doing in order to do what you’re doing. You become a holy man by learning to act holy. The furrowed brow, the shambling gait, the vacuous modesty, the weird verbless speech, and Abbot Bob has mastered the act beautifully, but one look in his eyes tells you that nobody is home, he is a vacant shrine. (p.11)