In truth, nowhere; for all those concepts are without philosophical value. They are nothing but a series of classes, which can be fashioned in the most various ways and multiplied at pleasure, to which it is sought to reduce the infinite complications and shadings of the values and disvalues of life. Of these classes, some have an especially positive significance, like the beautiful, the sublime, the majestic, the solemn, the serious, the weighty, the noble, the elevated; others a significance chiefly negative, like the ugly, the painful, the horrible, the dreadful, the tremendous, the monstrous, the insipid, the extravagant; finally in others a mixed significance prevails, such as the comic, the tender, the melancholy, the humorous, the tragi-comic. The complications are infinite, because the individuations are infinite; hence it is not possible to construct the concepts, save in the arbitrary and approximate manner proper to the natural sciences, satisfied with making the best classification they can of that reality which they can neither exhaust by enumeration, nor understand and conquer speculatively. And since _Psychology_ is the naturalistic science which undertakes to construct types and schemes of the spiritual life of man (a science whose merely empirical and descriptive character becomes more evident day by day), these concepts do not belong to Æsthetic, nor to Philosophy in general, but must simply be handed over to Psychology. [Sidenote: _Impossibility of rigorous definitions of them._]