Logic
IV 3
nothis essential to optics would be omitted, nor anything foreign to it inserted. Those writes, however, who stand out for the trinity of normative sciences do so upon the ground that they correspond to three fundamental categories of objects of desire. As to that, the logician may be exempted form inquiring whether the Beautiful is a distinct ideal or not; but he is bound to say how it may be with the True; and accordingly the intentionof this chapter is to lay the foundation for the doctrine, which will appear more and more evident as we proceed, that that Truth the conditions of which the logician endeavors to analyze, and which a phase of the [summun?] [bonun?] which forms the subject of pure ethics, and that neither of those men can really understand himself until he preceives clearly that it is so.
EN