The human body is the most wondrous machine in the world. It has a bewildering multiplicity of limbs, organs, veins, nerves and cells, which co-operate to maintain it under varied conditions. If any one of these rebels or refuses to rescue another, the body is bound to suffer. So too, a society, community or nation can be safe, secure and happy only when the individuals comprising it are mutually helpful and bound together in skilful and sincere service. Or else, the world has to face confusion and chaos. (AV, p. 116)