Don't judge centering prayer on the basis of how many thoughts come or how much peace you enjoy. The only way to judge this prayer is by its long-range fruits: whether in daily life you enjoy greater peace, humility and charity. Having come to deep interior silence, you begin to relate to others beyond the superficial aspects of social status, race, nationality, religion, and personal characteristics.
— Thomas Keating, The Daily Reader for Contemplative Living by Thomas Keating, S. Stephanie Iachetta, editor