Concerning the Obligation of Each Person to Study the Wisdom of Kabbalah
Understanding the meaning of the word, “spirituality,” has nothing to do with philosophy. This is because how can they discuss something that they have never seen or felt? What do their rudiments [their opinion about spirituality] stand on? If there is any definition that can tell spiritual from corporeal, it belongs only to those who have attained a spiritual thing and felt it. These are the genuine Kabbalists; thus, it is the wisdom of Kabbalah that we need.
– Baal HaSulam, “The Wisdom of Kabbalah and Philosophy”
Spiritual redemption is possible only by studying the wisdom of Kabbalah. [It is because only the study of Kabbalah, the study of the Upper Light’s act on the desire can attract its influence upon us. And this is our sole opportunity to change, ascend to the Upper World, and reveal the Creator.]
– Vilna Gaon, “Even Shlema,” Part 11, 3