through an interpretation of the world but only in the decision of the moment.’12 And in Karl Barth we read: ‘There is free scope for natural science beyond what theology has to describe as the work of the Creator. And theology can and must move freely where a science which really is science, and not secretly a pagan Gnosis or religion, has its appointed limits.’13 But, talking about a view of this kind, Carl Friedrich von Weizsäcker had already commented: ‘A cleft between existence and nature which