This booklet was written with the object of encouraging confidence in the future which seems too often to be uncertain in many areas of the world, where stability appears to be only fleeting. Today there are so many wars which, although usually localised, still entail the mobilisation of tens of thousands of troops (official and unofficial) armed with a vast range of basic and sophisticated weapons. All of these cause many deaths and terrible injuries to combatants and civilians alike. Additionally there are natural disasters of various kinds. This dissertation includes some discussion of the...