Byron Katie's husband, Stephen Mitchell, explains that early
in their marriage he used to read to her from
great spiritual teachers like Lao-Tzu and the Buddha. She
called these people "his dead friends." Katie would
take in their words, sometimes nodding and saying "that's accurate."
But occasionally, to his surprise, she corrected their statements
with one of her own.
He believed that she was speaking as the peer of these
ancient sages, as somebody who has had the same experiences and can
speak about enlightenment with equal authority. Eventually Stephen
decided to read to her his translation of the Tao Te Ching,
all 81 chapters, and write down her responses. Those responses
became the raw material for this book.