Blessed are the poor in spirit . . .So begins the Sermon on the Mount, Jesus' great message to everyone with ears to hear. St. Francis of Assisi heard its message and challenged the church and empire of his day by ordering his life around it--giving up his power, wealth and privileges; claiming the poor and powerful alike as his brothers and sisters; and loving Islamic neighbors even as his church and state waged war on them.Centuries later, Jamie...