At the same time, it must be noted that just as the white in a book is the primary medium9The intention here is that the white page is the majority of the physical content of the book, and as such it "carries" (noseh literally means to "carry," which is the function of a given kind of medium) the other content upon it. [noseh] of the book, while the letters are all “borne” [nesu’ot] upon the white in the book – and were it not for the white, there would be no possible existence for the letters and all the manifestations of wisdom they contain – so too, the world of Atzilut, which is the sefira of Ḥokhma, is the primary bearer of the revelation of Ḥokhma, which is revealed through the worlds of Beria, Yetzira, and Asiya. This is the meaning of the verse: “In wisdom [Ḥokhma] You have made them all” (Psalms 104:24).