Takuan Soho

When a person does not think, "Where shall I put it?" the mind will extend throughout the entire body and move to any place at all. . . . The effort not to stop the mind in just one place - this is discipline. Not stopping the mind is object and essence. Put it nowhere and it will be everywhere. Even in moving the mind outside the body, if it is sent in one direction, it will be lacking in nine others. If the mind is not restricted to just one direction, it will be in all ten.

When this No-Mind has been well developed, the mind does not stop with one thing nor does it lack any one thing. It appears appropriately when facing a time of need.