Accordingly, the first thing to be understood about the government of the worlds is that it depends on gradation and measure. This is the first foundation that Eyn Sof, blessed be He, willed, and the Place was made according to this will. The very fact of the Tzimtzum itself shows that He wanted gradation and measure, for if not, Eyn Sof, blessed be He, could have made the lowest of all creatures according to His will without any Tzimtzum whatever.
On the contrary, the Tzimtzum is the first foundation of what we are explaining. Since He wanted to contract Himself in order to bring forth creatures, clearly He wanted to put the light on a level corresponding to what was to be born out of it. That is why He removed His limitlessness from here, bringing forth the Place that came forth – the pathway of government by gradation and measure, though certainly, if He had not contracted His light, He could have brought His creatures into being from elsewhere.