 Here’s a non-religious example: suppose that you would like to retain a good relationship with your teenage son, and you are aware that this requires believing the best of him whenever possible. You also have some moderate but not compelling olfactory evidence that he is using drugs in the house when you are away (in response to your queries, he claims that he has recently taken up transcendental meditation, and that the funny smell when you come home is just incense). Suppose too that you know yourself well enough to know that your relationship with your son will be seriously damaged if you come to view him as a habitual drug-user. This suggests that you would violate a prudential norm if you go ahead and believe that he is. In other words, it is prudent, given your ends, to withhold belief about the source of the aroma altogether, or even to believe, if possible, that he is not smoking pot but rather burning incense in your absence. 