In former times, when individual Christians were still surrounded by a Christian family and society, it might have been sufficient to have a Catechism in the form of mere questions and answers. Life itself provided the believer with all his religious needs. Today, however, in our unsettled world, we can no longer tolerate a situation in which religious truths are left lying about like scattered bricks on a building site. They must be put together to form a modern cathedral of our faith in which every child will find all he needs for his religious life, in which he can feel happy and at home.