Abraham Isaac Kook (1865-1935) was the first Ashkenazi Chief Rabbi of the British Mandatory Palestine; the founder of Yeshiva Mercaz HaRav Kook (The Central Universal Yeshiva); Jewish thinker; Halakhist; Kabbalist and a renowned Torah scholar.

Rabbi Kook is known in Hebrew as 'HaRav Avraham Yitzchak HaCohen Kook'; 'or simply as 'HaRav'. He was one of the most celebrated and influential rabbis of the 20th century. Pictures From History