There are, o Monks, among these disciples some monks, who persevere assiduously as conquerors of introspective breathing exercises. Inhalation and exhalation, o Monks, practiced and cultivated introspectively causes the attainment of high recompense, of high advancement. Inhalation and exhalation, o Monks, practiced and cultivated introspectively causes the unfoldment of the Four Foundations of Introspection; the Four Foundations of Introspection, practiced and cultivated assiduously, cause the enfoldment of the Seven Factors of Enlightenment; the Seven Factors of Enlightenment, practiced and cultivated introspectively, cause the enfoldment of Knowledge that liberates.

(Buddha Sakyamuni)