For investigating and forming any universal in this Art so as to descend from it to any required particular item, the senses must first survey the figures with their propositions so that the imagination can imagine the necessary universal while memory remembers the sayings or terms of the figures, and the will desires the common good, loves truth and hates falsehood. As the senses, imagination, memory and will discourse in this way, the intellect rises to the universal and through discourse discovers it to be a medium where sometimes only statements of T. are combined, sometimes T. and A. are used together, sometimes several figures are combined according to whatever is required, like S. and V. etc. And T. must always be present, for without T. nothing can be done with the other figures.

Thus the intellect discovers this universality which is a medium conditioned by the fact that no statement of T. or A. or of any of the other figures can be discarded or deemed irrelevant. And the constitution of this universality must always be directed by combining and joining the terms in the figures, namely T. and the other figures, and observing the concordance of the propositions and their questions. And this is always done with T.:  either alone, or by taking T. with A. , or T. with A. and S. and adding other figures, and sometimes by taking T. with S. and adding other figures, etc.

This process involves a greater or lesser number of figures in accordance with the requirements of different universals and the concordance between the particular that is sought in the universal and the principles and cameras of the figures. Examples that show how to investigate and form universal concepts are given in the fourth section, where certain universal cameras are used for solving various particular questions.