But our languages often require to express the inverse relation, namely, that of the individual possessing a quality to that quality. For just as there are names of qualities which are derived from adjectives, as _beauté_, _gaieté_, _bellezza_, _tapferkeit_, _gleichheit_, so there are others which are primary and from which, therefore, the corresponding adjectives are derived: _courage_, _courageux_; _joie_, _joyeux_; _beauty_, _beautiful_; _glück_, _glücklich_; _freude_, _freudig_. And, as one sees, our languages employ in these cases a series of analogous suffixes. The international language must evidently imitate them, for it cannot decree that all the names of qualities shall be derivative, nor that they shall all be primary; that would amount to an arbitrary uniformity contrary to the spirit of our languages and probably also to our logical instincts. The international language must, therefore, have a suffix which will serve to derive from the name of a quality the name of the possessor of that quality. That will be _-oz_, a Latin suffix (_formosus_, _generosus_, etc.), occurring very frequently in the Romance and even Germanic languages (_mysteriös_, _mysterious_, _mystérieux_, _misterioso_). This suffix is the logical inverse of the preceding one (_-es_) and is quite as indispensable as it. It is a curious fact that our languages exhibit examples of the superposition of these two suffixes considered in respect of their sense, if not their form: _glück_, _glücklich_, _glücklichkeit_; _beauty_, _beautiful_, _beautifulness_. Latin has derived _formosus_ from _forma_; Spanish in its turn has derived _hermosura_ from _hermoso_, etc. Languages also provide us with frequent examples of the reciprocity of these suffixes. On the one hand, On the other hand, _gaie_ gives _gaieté_; _joie_ gives _joyeux_; _gay_ " _gaiety_; _joy_ " _joyful_; _allegro_ " _allegrezza_; _gioja_ " _giojoso_; _fröhlich_ " _fröhlichkeit_; _freude_ " _freudig_. The international language is, therefore, faithful not only to logic, but to the spirit of our languages, in admitting at the same time the two inverse derivations: _gaya_, _gayeso_; _joyo_, _joyoza_. A language which contained the suffix -es, and not the suffix _-oz_, would be lame or one-armed.