Ayin & Yesh: Nothingness & Being
Ayin (Hebrew: אַיִן, lit. 'nothingness', related to אֵין ʾên, lit. 'not') is an important concept in Kabbalah and Hasidic philosophy. It is contrasted with the term Yesh (Hebrew: יֵשׁ, lit. 'there is/are' or 'exist(s)'). According to kabbalistic teachings, before the universe was created there was only Ayin, the first manifest Sephirah (Divine emanation),and second sephirah Chochmah (Wisdom), "comes into being out of Ayin."1 In this context, the sephirah Keter, the Divine will, is the intermediary between the Divine Infinity (Ein Sof) and Chochmah. Because Keter is a supreme revelation of the Ohr Ein Sof (Infinite Light), transcending the manifest sephirot, it is sometimes excluded from them.
Ayin is closely associated with the Ein Sof (Hebrew: אין סוף, lit. 'without end'), which is understood as the Deity prior to His self-manifestation in the creation of the spiritual and physical realms, single Infinite unity beyond any description or limitation. From the perspective of the emanated created realms, Creation takes place "Yesh me-Ayin" ("Something from Nothing"). From the Divine perspective, Creation takes place "Ayin me-Yesh" ("Nothing from Something"), as only God has absolute existence; Creation is dependent on the continuous flow of Divine lifeforce, without which it would revert to nothingness.
Maimonides and other Jewish philosophers argued a doctrine of "negative theology", which says there are no words to describe what God is, and we can only describe what "God is not". Kabbalah accepted this in relation to Ayin, becoming one of the philosophical concepts underlying its significance.4 However, Kabbalah involves itself with the different, more radical proposition that God becomes known through His emanations of Sephirot, and spiritual Realms, Emanator ("Ma'ohr") and emanations ("Ohr") comprising the two aspects of Divinity.