with empirical limitations, to attain to philosophical distinctions, but that it is necessary to start from these, in order to interpret contingent facts, and finally to understand also the mode of formation of empirical classes. For this reason the psychological method revolves in a circle that is effectively vicious. [Sidenote: _Deduction and the necessity of integrating it with induction._] Neither is it possible to proceed with the method that we shall call deductive solely; that is, we see the necessity of the two sub-forms of the practical activity, which, being the object of the subject and therefore in every way analogous to the activity of the subject, that is, to the theoretical, must have a duplication of forms answering to the duplication of the theoretical activity into æsthetic and logical, and cannot posit the universal practical without positing the individual that shall be its vehicle. This deduction, although in every way correct and rigorous, cannot be convincing, save when it is also demonstrated that it responds to fact as revealed by observation, that is, when deduction is also induction, as the speculative method demands. [Sidenote: _The two forms as a fact of consciousness._] Leaving, therefore, on this occasion also, the deductive proof to the complete development of the theory, we shall begin by appealing to observation of self, in order that every one may verify in himself the existence of the two different forms of volitional acts, termed by us economic and ethic. The economic activity is that which wills and effects only what corresponds to the conditions of fact in which a man finds himself; the ethical activity is that which, although it correspond to these conditions, also refers to something that transcends them. To the first correspond what are called individual ends, to the second universal ends; the one gives rise to the judgment concerning the greater or less coherence of the action taken in itself, the other to that concerning its greater or less coherence in respect to the universal end, which transcends the individual. [Sidenote: _The economic form._]