As a society we are obsessed with food. Our supermarkets are overfilled, recipe books crowd the aisles of bookstores, and there are more cooking shows than can be counted. But we are also addicted to food, burden our bodies with toxic food, and are the most obese nation on earth with a growing segment of people who have little access to healthy food or enough food at all. What is the meaning bread, wine and water hold for our material and spiritual...