The Golden Mountain, by Meyer Levin, , at sacred-texts.com
When the Baal Shem Tov was near his death, a student came to him with a written book and said, "These are your words, which I have written down. This is the Torah of Rabbi Israel."
The Master read what was written, and said, "Not one word of this is my Torah."
Before he died, Rabbi Israel said, "The holy men after me will be as the leaves on the trees. The Tsadikim will be as numerous as poppyseeds, and as great."