The last chapters of Spekali are devoted to Petrizi. In chapters 148 and 149, Anton Bagrationi treats the topic of knowledge on the basis of the propositions on nous in the Interpretation. Following Petrizi, it is here claimed that reasoned knowledge is different from the soul’s mode of knowledge. In its essence, the activity and the substance of reason are a unity, whereas the nature of the soul shows itself to be differentiated. The essence and the activity of the soul can be distinguished inasmuch as knowledge is not the primary quality of the soul. In its knowledge, the soul proceeds from one being to another, that is, the acquired insights are deemed to be the bases for the progress of knowledge. The knowledge of reason has to be characterized differently, for its activity is grounded in eternal knowing and can be seen as nothing other than this activity. At this point it must be remarked that Anton Bagrationi made intensive use of the noetic terminology of Petrizi’s Proclus Commentary to characterize his concept of knowledge. His significant philosophical determinations of noetics were worked out exclusively with reference to Petrizi.