Sefer Yetzirah

Sefer Yetzirah is a work of Jewish mysticism. Early commentaries, such as the Kuzari, treated it as a treatise on mathematical and linguistic theory, as opposed to one about Kabbalah. The word Yetzirah is more literally translated as "Formation", the word B'riah being used for "Creation". The book is traditionally ascribed to the patriarch Abraham, although others attribute its writing to Rabbi Ak