The concept of spirituality varies among different Christian groups. In some circles the highly vocal person who talks religion continually is thought to be very spiritual; others accept noisy exuberance as a mark of spirituality, and in some churches the man who prays first, longest and loudest gets a reputation for being the most spiritual man in the assembly. Now a vigorous testimony, frequent prayers and loud praise may be entirely consistent with spirituality, but it is important that we understand that they do not in themselves constitute it nor prove that it is present. True spirituality manifests itself in certain dominant desires. These are ever-present, deep-settled wants sufficiently powerful to motivate and control the life. . . .