The practices of Rabbi Abraham Abulafia (1240–c.1291) and the meditations from Sefer Yetzirah as presented by Rabbi Aryeh Kaplan represent some of the most intensive contemplative disciplines in recorded history. They can produce genuine altered states and, if undertaken unwisely, real psychological distress.
"Know that this way is very great, and you must be very careful… for the divine spirit will overflow upon the practitioner according to his preparation."
— Abulafia, Ḥayyei ha-Olam ha-Ba
Born in Zaragoza, Abulafia wandered the Mediterranean before developing his school of Kabbalah Nevuit — Prophetic Kabbalah. His goal was not theosophical description of the divine but direct union with the Active Intellect, the threshold of prophetic experience.
Ḥayyei ha-Olam ha-Ba, Or ha-Sekhel, and Sefer ha-Ot contain precise instructions on breath, letter combinations, vowel-head movements, and colour visualisation — among the most detailed meditation manuals in medieval Jewish literature.
Controversial in his own time, Abulafia's influence on later Kabbalah, the Safed mystics, and ultimately Hasidism was profound. The Rashba (R. Solomon ibn Adret) warned against his methods publicly, but the tradition he founded never disappeared.
Rabbi Aryeh Kaplan — American Orthodox rabbi and physicist — became one of the most important translators of Jewish mysticism in the 20th century. His Meditation and Kabbalah (1982) and posthumous Sefer Yetzirah commentary (1990) made authentic Kabbalistic meditation techniques available in English for the first time.
One of the oldest surviving Jewish mystical texts (probably 3rd–6th century CE), Sefer Yetzirah describes creation through thirty-two paths — ten sefirot and twenty-two letters. Kaplan synthesised multiple manuscript traditions and provided practical meditation instructions not previously accessible in English.
Kaplan's description of the Three Mothers meditation (SY 3:1–8) includes alternating between the sound of Mem (the cool, receptive "mmmm") and Shin (the fiery ascending "shhhh"), with Aleph as the silent breath of balance between them. This practice works directly with the fundamental polarity of creation.
Breath (Neshimah): Inhale 4 · Hold 4 · Exhale/sound 8 · Rest 4.
Vocalisation (Kol): Murmured — barely audible, genuinely voiced, felt as throat vibration.
Head Movement (Niyua ha-Rosh): Kamatz→forward-down · Patah→right · Tzere→left · Holam→up · Shuruk→inward.
Colour Visualisation: Advanced practice; each letter in its traditional colour while physical practice proceeds.
Permutation (Tzeruf): Systematic combination exhausts the rational mind's meaning-making, opening a different mode of awareness.
More contemplative than Abulafia — sustained dwelling on letters, sounds, or sefirot, allowing their qualities to permeate awareness. The two approaches complement each other: Kaplan for depth and settling; Abulafia for active transformation.
Aleph (א): Air · chest · balance. The breath itself — silent, neutral, between fire and water.
Mem (מ): Water · belly · descending. Cool, receptive, silent, flowing.
Shin (ש): Fire · head · ascending. Warm, active, transformative, rising.
Letters with two pronunciations — embodying duality. Each holds a pair of opposites: life/death, peace/war, wisdom/folly, riches/poverty, seed/desolation, grace/ugliness, dominion/servitude.
The remaining twelve letters correspond to the twelve months, constellations, and organs of perception — the experiential richness of the created world.
The ten sefirot of Sefer Yetzirah are not yet the elaborate tree of later Kabbalah — they are primordial qualities: the Breath of the Living God; Breath from Breath (Air); Water from Breath; Fire from Water; and the six directions of space.