Thus we see that it is Eyn Sof, blessed be He, Who acts in His intrinsic perfection on His plane of limitlessness. It is Eyn Sof Who executes every action within limits. And just as the execution of the action is carried out to perfection, so too the intention of the action is to bring everything to perfection. It is in order to accomplish this purpose that the action is executed within limits and without perfection. And what is the benefit of this? That even though the intermediary is imperfect – for the work is deficient – nevertheless, the result is that everything is brought to complete perfection at the end of all the cycles.
Tale of Eyn Sof
Kalach Pitchei Chokhmah 27:19