Among the things known by presence are the forms and mental concepts themselves...

Among the things known by presence are the forms and mental concepts themselves, which are not known to the self through the mediation of other forms and concepts. If it were necessary for knowledge of anything to be obtained by means of forms and mental concepts, one would have to know every mental form by means of some other form, and knowledge of that form also by means of another form.

In this way, for everything you knew you would have to know an infinite number of other things and have an infinite number of other mental forms. It is possible that a question might be raised here, for if presentational knowledge is the thing known itself, then it becomes necessary that mental forms will be both presentational knowledge and acquired knowledge. For these forms in one respect will be known by presence, so they…