Now there is a difference between the aspect of the Likeness of Man included in this world (of Nekudim) by way of governmental laws and the aspect of the Likeness of Man included in it by way of the design of the image or representation (the separate worlds themselves). The aspect of the governmental laws was able to exist in its entirety with all its branches, which are only lights, just as is the root.
However, the aspect manifested in the image or representation – the separate creations – could only exist in actuality through the power of Tzur Tak, its branches being contained therein in potential. (For Tzur Tak is a power and is not itself one of the separate creations, yet it produces separate creations, Beriyah, Yetzirah and Asiyah, as its branches, and they are said to be “in potential” in relation to Tzur Tak, for they are not in the same category but emerge from it.)
For its intrinsic nature is to produce separate branches corresponding to all the details contained in it. This is not so in the case of the other Sefirot, whose nature is not to produce anything as their branches except other lights.