Isaac the Blind

The Aramaic epithet "Saggi Nehor" means "of Much Light" in the sense of having excellent eyesight, an ironic euphemism for being blind.

[1] Some historians suspect him to be the author of the Book of the Bahir, an important early text of Kabbalah.

Others (especially Gershom Scholem, see his Origins of the Kabbalah, p. 253) characterize this view as an "erroneous and totally unfounded hypothesis".

Isaac considered the sefirot as having their origins in a hidden and infinite level deep within the Ayn Sof, or Divine Being (lit.

Individual beings in the world are material manifestation of the sefirot, albeit on a lower level of reality.