For 10 points, name this founder of Hasidic Judaism.
According to one story, this man scoffed at collection of his sayings by stating "there is nothing I said within this book", pointing out that they came from God. Late in his life, this man was a harsh critic of Jacob Frank and his followers, the Frankists. This man's teachings were recorded by his student, Jacob Joseph of Polonoy. This man's warning of "Amalek is still alive today" suggested that skepticism of God was the enemy of all Jews. This man's rejection of asceticism came from his belief that all things in the material world must possess some good, because life and the entire universe is a manifestation of god. This man's followers, who are contrasted with the Talmudists, are divided into dynasties led by a Rebbe, the largest of which was formed in Lubavitch and is called Chabad. For 10 points, name this founder of Hasidic Judaism.
According to one story, this man scoffed at collection of his sayings by stating "there is nothing I said within this book", pointing out that they came from God.
Baal Shem Tov [or Rabbi Israel ben Eliezer; or Besht]