Will you not see - this occurred to the first man himself, and understand well this matter. For if the Holy One blessed is hear had created the world only from the side of good without a side of negative at all, then thought could not have described negative at all, in order to understand the singularity in His perfection, as we explained early. But since he already created the negative, then certainly thought could describe it, and to recognize from its power the Singularity in truth.
And indeed, tbe first man had already seen negativity, for was it not the tree of knowledge of good and negative that the Holy One blessed is he had forbidden to him, and even so his eyes caused him to err to contemplate this as desirous to the eyes, and and good for food, and pleasant to study like the words of the text (Genesis 3:6), "And the woman saw...". And you find, that she saw immediately that there was room to for error G-d forbid, and to say either there are two domains G-d forbid, or all the other bad ideas that were placed before them by the snake: