In his Natural History of Religion, the 18th century philosopher David Hume famously derides the Catholic doctrine of transubstantiation, asserting that no tenet in paganism invites as much ridicule. “For it is so absurd,” he writes, “that it eludes the force of all argument.” In the course of his polemic, he relates the story of the young Turk Mustapha, who had been taken prisoner and persuaded to convert to the Christian faith. The day after his baptism and communion the catechist continued his instruction and asked the young man, “How many Gods are there?” The new Christian replied, “None at all.” “How! None at all!” cried the priest. “You have told me all along that there is but one God,” explained Mustapha: “And yesterday I eat him.”
From Pontifications.

I do think that transubstantiation has to be the biggest challenge to rational thought in our faith.
Even if you accept the premise of the thing, the physical consequences of it defy most science, philosophy, and just plain ol' common sense.
I keep meditating that in the next life (or during revelation), our perception of it will be skewed ever so slightly, and it will all be perfectly obvious...like when you find out how a magic trick is done because you are sitting at a different angle than the audience.
Posted by: PeterTerp | June 23, 2008 at 01:11 AM