Abstract
In this article I have pointed to some contradictions which appear in Popper's „Of Clouds and Clocks”. These contradictions are explained on two different levels. First, they are represented as the result of conceptual confusions. Secondly, they are connected with a paradox which is never explicitly stated by Popper, but which seems fundamental for a better understanding of what the freewill-controversy is about. The paradox is this : on the one hand freedom is usually and naturally considered as self-determination, i.e. as the power to act in accordance with one's own motives, desires, intentions ; but on the other hand, the kind of freedom which is at stake in the freewill-debate, seems to require a determination by „external” elements (rules, theories, ideals, „objectivity”). The influence of these elements goes beyond our control and therefore also beyond our self-determination. The freedom which is defended by Popper, consists in the possibility to be determined by objective standards, i.e. by something which is external to our motives and desires. It is not clear, however, how we should draw a line between the kind of external influence which is opposed to this „freedom” and the kind of external influence which is required by this „freedom”