Rabbi Aryeh Kaplan was born in New York City and was educated in The Torah Voda'as and Mir Yeshivot in Brooklyn. After years of study at Jerusalem's Mir Yeshiva, he was ordained by some of Israel's foremost rabbinic authorities. He also earned a master's degree in physics and was listed in Who's Who in Physics in the United States. In the course of a writing career spanning only twelve years, Rabbi Kaplan earned a reputation as one of the most effective, persuasive, scholarly, and prolific exponents of Judaism in the English language. He died on January 28, 1983, at the age of 48.