The Gilgul of Rav Sheshet: As we already explained regarding the concept of "Gilgul Kaful" ("Double Gilgul," where two Nefashot come together into one body), this is also what happened to Rav Sheshet who was blind ('full of light'). And, when he was delving into his Torah studies, he was happy, and he said, "חדאי נפשאי, לך קראי, לך תנאי וכו'," (everything I do is for you). It appears as if one might not understand these words [and I need someone to further translate because I don't have the right words; the explanation will be in the next paragraph. Everything Rav Sheishet did, he did it "for you." But who is "for you"?]