Part 16 · Chapter 31

However, when the light passes to the world of Beriah, another change is added to it, namely, that Beriah does not receive the light except through an actual screen separating between it and Atzilut. And behold, the light that passes through a screen is not the first light itself, but its offshoot is born from it. Therefore the name of this world changed, and it is not called Atzilut but Beriah, for it is a new creation, unlike the first.