 Even though Brentano’s views on ethics and aesthetics are somewhat sketchy and not worked out in detail, we can note that his treatment of the three practical disciplines of logics, ethics, and aesthetics are unified by a common principle: the idea that judgments or emotions not only can be positive or negative, they can also be fitting or appropriate to their object. Moreover, by tying the three disciplines to his tripartition of mental phenomena (presentations, judgments, emotions), he also assigns them an exact collocation in his overall philosophical system. For these reasons, recent commentators have insisted in the systematicity of Brentano’s philosophy, arguing that he “was the last philosopher to have offered a system in the sense of a structurally unified account of the true, the good, and the beautiful.” (Kriegel 2017a, 29). Kriegel acknowledges, however, that “Brentano was not a systematic writer” (ibid., 21). This shows in the fact that Brentano saw his task mainly in sketching the basic views on aesthetics and ethics in lectures, but never presented a longer or systematic treatise of these topics, which can be explained by his conviction that science was a collective enterprise and by his aversion of the cult of the genius that was widespread in his times. Brentano probably hoped that others would continue to work out the details within the parameters he had set. We know about his views on aesthetics and ethics only from lecture notes that have been cut, revised, and amended by his students, who typically did not bother to document their substantial editorial changes in the published text. Moreover, Brentano never presented his philosophical position as a system, probably because he did not want to be associated with German system philosophers of the early and mid-nineteenth century. Thus, the claim that Brentano was a system-philosopher is somewhat questionable, though he definitely was a systematic thinker in the sense that he always kept the overall picture in mind when working on a specific problem. 