Baal HaSulam, “Matan Torah (The Giving of the Torah),” Item 15: Now we can understand the words of Hillel Hanasi to the proselyte, that the essence of the Torah is, “Love thy friend as thyself,” and the remaining six hundred and twelve Mitzvot are but an interpretation of it.
And even the Mitzvot between man and God are regarded as a qualification of that Mitzva, which is the final aim emerging from the Torah and Mitzvot, as our sages said, “The Torah and Mitzvot were given only so as to cleanse Israel.”
The correction consists of restoring the shattered vessel and the transformation of all the rejection between its shattered parts into connection. Then the intensity of the connection between the shattered parts will grow 613 times from what it was before and then the vessel will be able to reveal the Creator in full depth and in all the details.
On the day that he was created, Adam was created as an angel; he had no comprehension of anything: neither good nor evil. But through discovery of the great ego between all of his parts, through transforming them to connection, he received a deep comprehension of the Creator, the Light, the Bestower, the Upper, and reached adherence with Him. His gain compared to the initial state is his own growth and adherence with the Creator.
From the 2nd part of the Daily Kabbalah Lesson 5/25/14, Writings of Baal HaSulam