I heard from a rabbi in our community that there was once a man who wrote down the Baal Shem Tov's torah - all that he had heard him teach. One day, the Baal Shem saw the man walking along, clutching a book in his hand. He said to him, "What is this book you are carrying?" The man answered, "This is the book that you wrote," and he disappeared. Later the Baal Shem gathered all of his disciples and asked them, "Which one of you is writing down my torah?" The same man stepped forward and handed over the book. The Baal Shem took a moment, glanced at the pages, and said, "There is not even one word here that is mine."