Aryeh Moshe Eliyahu Kaplan (Hebrew: אריה משה אליהו קפלן;) was an American Orthodox rabbi and author known for his knowledge of physics and kabbalah. He was lauded as an original thinker and prolific writer and is most well known for his translations of the Torah, writings on Kabbalah, and introductory pamphlets on Jewish beliefs and philosophy. His works are often regarded as a significant factor in the growth of the baal teshuva movement.
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