Summary: Explanation that this retreat is based on two letters by Takuan Soho: The Mysterious Record of Immovable Wisdom and The Clear Sound of Jewels (these can be found in a collection of his writings entitled The Unfettered Mind); the three requirements to practice in the way described in The Unfettered Mind: ability, principles, technique; responding versus reacting; overview of what will be done in the retreat's body movement sessions.
