But the dynamical concepts of reason, with which we are concerned in this and the fol lowing number, have the peculiarity that since they do not consider their object as a magnitude but have to do only with its existence, one can thus abstract from the magnitude of the series of conditions, and with them it is merely a matter of the dynamical relation of condition to conditioned; thus the difficulty we encounter in the question about nature and freedom is only whether freedom is possible anywhere at all, and if it is, whether it can exist together with the universality of the nat ural law of causality, hence whether it is a correct disjunctive proposition that every effect in the world must arise either from nature or freedom, or whether instead both, each in a different relation, might be able to take place simultaneously in one and the same occurrence.