And how could the Soul lend itself to any admixture? An essential is not mixed. Or of the intrusion of anything alien? If it did, it would be seeking the destruction of its own nature. Pain must be equally far from it. And Grief — how or for what could it grieve? Whatever possesses Existence is supremely free, dwelling, unchangeable, within its own peculiar nature. And can any increase bring joy, where nothing, not even anything good, can accrue? What such an Existent is, it is unchangeably.
Thus assuredly Sense-Perception, Discursive-Reasoning; and all our ordinary mentation are foreign to the Soul: for sensation is a receiving — whether of an Ideal-Form or of an impassive body — and reasoning and all ordinary mental action deal with sensation.
The question still remains to be examined in the matter of the intellections — whether these are to be assigned to the Soul — and as to Pure-Pleasure, whether this belongs to the Soul in its solitary state.