What this means is that it was not only as a result of the Tzimtzum alone that the divine attributes became visible as radiations of light, nor was this simply the inevitable consequence of the Tzimtzum. What the Tzimtzum did was only to remove the aspect of limitlessness from His power to bring a separate creation into being “outside” of Himself, so that from then on the work of creation would be subject to an orderly law within bounds and limits. Combined with this was His desire that this law should be able to be seen, and this is what caused the light to be visible.