The author uses the word in a personal sense: an entry into immensity, “where all is nothing and nothing is all,” and a descent into the depths of the unconscious to approach wounds, fears learned in childhood, and painful experiences gathered since; that learned programming he calls the programming of the mind. “Cleansing,” when he says it, means recognizing and working with those wounds; not erasing memories or promising a cure. The book does not teach how to induce it.
Text from the glossary of Quietud Sagrada.