(Spirit Rock Meditation Center) To deepen in concentration, we need to be willing to recognize whatever disturbances or hindrances might be present, however subtle, and to work with them skillfully, ultimately to release them. This allows the mind to settle to the next level of stillness. This talk is based on practice as described in Majjhima Nikaya (2), the Cula-Sunnata Sutta, The Lesser Discourse on Emptiness.