I have finished at least a rough draft of Letting Go in Action: the Practice of Zazen. The draft never does explain why letting go in action should be considered the practice of zazen but does perhaps offer an explanation of what Gautama’s four trance states have to do with mindfulness of the body. I would welcome any comments.
When formulating lay precepts based on his distinction between skillful and unskillful, the Buddha never made any allowances for ifs, ands, or buts. When you promise yourself to abstain from killing or stealing, the power of the promise lies in its universality. You won’t break your promise to yourself under any conditions at all.