Abraham Isaac Kook was an Orthodox rabbi, the first Ashkenazi chief rabbi of British Mandatory Palestine, the founder of Yeshiva Mercaz HaRav Kook (The Central Universal Yeshiva), a Jewish thinker, Halakhist, Kabbalist, and a renowned Torah scholar. He is known in Hebrew as HaRav Avraham Yitzchak HaCohen Kook, and by the acronym , or simply as HaRav. He was one of the most celebrated and influential rabbis of the 20th century.
