Baal HaSulam, Introduction to the Book, Panim Meirot uMasbirot, Section 8: Indeed, that Godly man, our Rav Isaac Luria, troubled and provided us the fullest measure. He did wondrously more than his predecessors, and if I had a tongue that praises, I would praise that day when his wisdom appeared almost as the day when the Torah was given to Israel….There are not enough words to measure his holy work in our favor. The doors of attainment were locked and bolted, and he came and opened them for us….You find a thirtyeight-year-old who surpassed with his wisdom all his predecessors through the genius and through all times. All the elders of the land, the gallant shepherds, friends and disciples of the Godly sage, the Ramak, stood before him as disciples before the Rav….All the sages of the generations following them to this day, none missing, have abandoned all the books and compositions that precede him, the Kabbalah of the Ramak, the Kabbalah of The First and the Kabbalah of The Genius, blessed be the memory of them all. They have attached their spiritual life entirely and solely to the Holy Wisdom.
Baal HaSulam knew how it is necessary to bless and to honor the Ari who revealed the wisdom of Kabbalah to us. Thanks to him, we have the possibility of rising from the beastly level to reach the level of the Adam (man), the one similar to the Creator. If not for the Ari, we really would have lacked the means. It was he who saved us from a mere beastly existence of only life and death.
There is no Kabbalist closer to us who has helped us so much, of all who were before and after him. All the books that were written before him were only a preparation for its disclosure. Everything that was done after him is derived from his revelation. Therefore the Ari truly symbolizes the beginning of the era of salvation.
The Ari made the greatest revelation that was possible to make. He rose from within the exile and developed a new way for correction of the world, meaning he began the process of correction. The exile ended together with the Ari and the period of correction began.
From the 3rd part of the Daily Kabbalah Lesson 3/17/14, Writings of Baal HaSulam