Thus we see that the light’s ability to be seen was not merely an effect of the Tzimtzum but resulted from God’s will that it should be visible. Prior to the Tzimtzum, however, it was impossible for the light to be seen because it had no bounds or limits. If so, we may say that the Tzimtzum caused the light to become visible not in the sense that the Tzimtzum was the intrinsic cause of the light’s ability to be seen but because the removal of limitlessness made it possible for it to be seen.
...some of His light and radiance... “Light” and “radiance” are terms that apply to the radiation emitted by a source of light. The radiation surrounds the source on the outside. This implies that the radiance that shines from Him is not something devoid of any intrinsic relationship with Godliness, serving merely to designate Godliness in the way that an agreed sign may be chosen to indicate a given object although the sign has no intrinsic relationship with the object in question. On the contrary, this radiance is integrally related to Godliness, which it signifies directly.