How does Gulliver characterize religious disputes in speaking to the Houyhnhms in Gulliver's Travels?

In his
conversation with the leader of the Houyhnhnms, Gulliver describes disputes over religion as
ludicrous and completely irrational:

Difference in
opinions has cost many millions of lives: for instance, whether flesh be bread, or bread be
flesh; whether the juice of a certain berry be blood or wine; whether whistling be a vice or a
virtue; whether it be better to kiss a post, or throw it into the...