'Just leave the tree-trunk alone, the beetle is crawling out.' This Baw ng proverb means: surrender to the divine course. Man must not start tugging at this tree, the beetle is already busy cleaning it up. In 1967, Tony van Buren went as a missionary-sponsored anthropologist to the Baw ng of the Congo, neighbours of the Lele made famous by Mary Douglas, initially to investigate her contentions about the 'non-religious' reasons for the mission's success...