Sufism is not a way in a closed vessel. It takes root in the Quran — but it has constantly dialogued with, crossed paths with, fertilised other spiritual traditions. Without confusion, without superficial syncretism: through resonance. Here are some of these great echoes, listened to with respect.
I — The inner Quran
First, prior to any “external resonance,” there is the resonance with the Quran itself. The Sufis have always considered that the holy Book contains two inseparable levels of reading: an exterior sense (ẓāhir · ظَاهِر) — the letter, the prescription, the narrative — and an interior sense (bāṭin · بَاطِن) — the spiritual, allusive dimension, which opens toward mystical experience.
A few essential Sufi verses:
We are nearer to him than his jugular vein. Quran 50:16
For the Sufis, this verse states the radical proximity of God — more interior to the human being than the human being is to himself.
Wherever you turn, there is the Face of God. Quran 2:115
A fundamental verse for the metaphysics of the theophanies of Ibn ʿArabī: all that manifests itself manifests God.
Everything is bound to pass away — save His Face. Quran 28:88
A central verse for the doctrine of fanāʾ and baqāʾ. The divine Face alone remains.
God is the Light of the heavens and the earth.
His Light is like a niche in which there is a lamp…
Light upon light. God guides to His Light whom He wills. Quran 24:35, the “Verse of Light”
A major verse for Suhrawardī and for the whole Sufi metaphysics of light.
He loves them and they love Him. Quran 5:54
The founding verse of all the spirituality of love, from Rābiʿa to Rūmī.
II — Echoes of Christian mysticism
Sufism and Christian mysticism have maintained, across the centuries, profound exchanges. At the origins, the first Muslim ascetics (2nd/8th century) were marked by the Christian hermits of the Syrian desert — Evagrius, Macarius, John Climacus — whose asceticism they admired. Later, the influence went in the other direction: the doctrine of the “pure love of God” of Rābiʿa would nourish, through the Crusades and the translations, Western Christian mysticism.
Three particularly striking convergences:
Meister Eckhart (d. 1328) and Ibn ʿArabī
The great Rhineland mystic speaks of the soul that empties itself of itself to become a “place of God” — exactly like the Sufi fanāʾ. “God is more interior to the soul than the soul is to itself,” says Eckhart. “One must leave oneself to find Him.” Ibn ʿArabī's commentaries on the same theme are so close that one wonders about possible historical transmissions — without being able to settle the matter.
Saint John of the Cross (d. 1591) and the Sufi language
The writings of the great Spanish mystic — The Dark Night, The Spiritual Canticle, The Living Flame of Love — use images of a striking kinship with the Sufis: the “night” (which is not without recalling the khalwa), the “flame” that consumes the lover, the “wound” of love. John of the Cross lived in a Spain only just converted by force, a few generations from cohabitation with the Andalusian Muslims. His master Teresa of Ávila had converted Jewish ancestors — a culture that had itself integrated much Sufism. The kinship is probably not by chance.
To love is to aspire to become like what one loves.
To love God is to become God. Saint John of the Cross
One would say it was al-Ḥallāj.
The Pseudo-Dionysius and the Imaginal
The negative (apophatic) theology of the Pseudo-Dionysius the Areopagite — which says that one knows God better by what He is not than by what He is — resonates with the whole Sufi metaphysics of tanzīh (absolute transcendence). And the concept of “celestial hierarchies” of the Pseudo-Dionysius prefigures the cosmologies of the imaginal world that one finds again in Suhrawardī and Ibn ʿArabī.
III — Echoes of the Jewish Kabbalah
In the twelfth and thirteenth centuries, in Andalusian Spain and then in the south of France, the Jewish Kabbalah developed in parallel with the great Andalusian Sufism. Several Kabbalist masters of that epoch lived in cultural intimacy with the Sufis. The correspondences are striking:
The divine Names
The Kabbalah elaborated a science of the Names of God — the Sefirot (ten attributes emanated from the En-Sof, the hidden Infinite) — which presents a structural kinship with the Sufi metaphysics of the 99 divine Names. For the Kabbalists as for the Sufis, the Names are not labels but realities through which God manifests Himself and structures the real.
The En-Sof and the Dhāt
The En-Sof of the Kabbalah — the absolutely unknowable Infinite, beyond all the Names — corresponds exactly to the Dhāt · ذَات of Ibn ʿArabī — the pure Essence that no Name can designate. In both traditions, the supreme meeting consists in touching this absolute unknowable, which is nevertheless not a nothingness but a plenitude.
The Adam Kadmon and the Insān al-Kāmil
The Kabbalist concept of the Adam Kadmon — the archetypal primordial Man who is the microcosm of the whole — and that of the Insān al-Kāmil of Ibn ʿArabī — the Perfect Man, the integral mirror of the divine Names — are so close that one hesitates between influence and autonomous resonance.
In the twentieth century, Henry Corbin, Gershom Scholem, Moshe Idel worked these parallels with a remarkable scholarly rigour. The conclusion imposes itself: Kabbalah and Sufism breathe a common air, even if one cannot always identify the precise paths of transmission.
IV — Echoes of India
The dialogue with the Indian traditions is one of the most fascinating — and one of the most historically attested.
Vedānta and Sufism
The doctrine of the Hindu Vedānta — particularly in its advaita (“non-duality”) form elaborated by Shankara in the eighth century — affirms that the ultimate reality (Brahman) is one, without a second, and that the multiplicity of the world is māyā (illusion-play).
The waḥdat al-wujūd of Ibn ʿArabī — the affirmation that God alone is, and that creatures are only His manifestations — presents an evident structural kinship. In the seventeenth century, the Mughal prince Dārā Shikoh wrote a book dedicated to this convergence: Majmaʿ al-Baḥrayn, “The Confluence of the Two Oceans.”
An important precision: these kinships do not signify identity. Sufism maintains absolutely the transcendence of God (tanzīh) and the Creator-creature otherness. The Vedānta tends rather to dissolve them. But on the summit of the experience — the union where duality is effaced — the languages converge.
Bhakti and Sufi love
The Indian bhakti movement — amorous devotion to God — is, in its temperament, strangely close to Persian Sufism. In the Middle Ages, in the Indian subcontinent, Chishtī Sufis and Hindu bhakti poets (Kabir, Mira Bai, Tukaram) frequented one another, read one another, influenced one another mutually. The result — particularly in northern India — is a common spiritual sensibility, which transcends the formal opposition between Islam and Hinduism.
Hindus and Muslims are the leaves of the tree.
If you cut the bark, you find the same wood. Kabir
Buddhism and extinction
More distant — because Buddhism does not posit the existence of a personal God — Buddhism nevertheless shares with Sufism the experience of extinction. The Sufi fanāʾ (“extinction of the ego”) and the Buddhist nirvāṇa (“extinction of the illusions”) aim at structurally analogous realities: the dismantling of the illusion of a separate self.
The classical Sufis — Geoffroy recalls — were perfectly conscious of this kinship. Ghazālī evokes in his works the Indian ascetics as men to be respected. And in the nineteenth and twentieth centuries, scholars such as D. T. Suzuki, Toshihiko Izutsu, traced conceptual bridges between Zen Buddhism and the metaphysics of Ibn ʿArabī.
V — What these resonances say
What is to be concluded from these resonances? The Sufis have long had a clear answer, which is summed up in a sentence of Ibn ʿArabī:
My heart has become capable of every form:
a meadow for the gazelles, a cloister for the monk,
a temple for idols, a Kaʿba for the pilgrim,
the Tablets of the Torah, the book of the Quran.
I follow the religion of love:
whatever path its caravans take,
love is my religion, and love is my faith. Ibn ʿArabī, Tarjumān al-Ashwāq
This word does not say that all religions would be identical — Ibn ʿArabī remains deeply Muslim. It says that love traverses all the forms. The diversity of the religions is real; they are different paths, different lands, different languages. But the reality toward which they point, in their highest moments, is one — because it cannot be plural.
Sufism — perhaps more than any other tradition — carries this paradox with serenity: deeply rooted in its own tradition (the Quran, the Prophet, the Companions), deeply open to recognising the same Source in the other traditions. It is this posture that allowed Rābiʿa to be celebrated by the Crusaders, Rūmī to be read today in Yiddish, in Mandarin, in Finnish, and Ibn ʿArabī to be studied by Kabbalists and Buddhist monks.
The ways to God are as numerous as the breaths of the creatures. Sufi adage
And every authentic way recognises, in the other authentic ways, its own face.