Baal HaSulam, "The Acting Mind": "Every person is obliged to attain the root of his soul. This means that the aspired-for purpose of the created being is adhesion with His qualities. His qualities are the Holy Sefirot, and this is the acting mind that guides His world and by which it allots them His benevolence and abundance.
But we must understand why this is called, “Dvekut with the Creator,” as it seems to be mere study…In every act in the world, the mind of its operator remains in that act. In a table, one can attain the carpenter’s dexterity and deftness in his craft….
This is so because in fact, there is no distance and cessation between spirituals, even when they are in distinct bodies. But the mind in them cannot be distinguished, since what knife can cut the spiritual and leave it separated? Rather, the main difference between spirituals is in their qualities – praiseworthy or blameworthy – and the composition, since a mind that calculates astrology will not cling to one that contemplates natural sciences.
And there is great diversity even within the same teaching, for if one exceeds another in even one element, it separates the spirituals from one another. But when two sages contemplate the same teaching and bear the same measure of sagacity, they are in fact united, for what separates them?
Hence, when one contemplates another’s action and attains the mind of the sage who performed it, they have the same mind and power. Thus, now they are completely united….
Hence, the rule is that in the Speaking, the mind is the best-adjusted force between the Creator and His creatures. It is considered the medium, meaning He conferred a spark of that force, and through that spark, everything returns to Him.
And it is written, “In wisdom hast Thou made them all,” meaning that He created the whole world with His wisdom. Hence, one who is rewarded with attaining the manners by which He had created the world and its conducts is adhered to the Mind that performed them. Thus, he adheres to the Creator.
This is the meaning of the Torah being all the Names of the Creator, which belong to the creatures. And by their merit, the creature attains the Mind that affects everything, since the Creator was looking in the Torah when He created the world, and one achieves illumination through Creation and forever cleaves to that Mind; thus, he is adhered to the Creator.
Now we understand why the Creator has shown us His tools of craftsmanship. For do we need to create worlds? But from the above-mentioned, we gather that the Creator has shown us His conducts so we may know how to adhere to Him, which is “cleaving unto His qualities.”