Indeed, those of us who are in ministry should make the necessary effort to acquaint ourselves with as many of these Eastern techniques as possible. . . . Many Christians who take their prayer life seriously have been greatly helped by Yoga, Zen, TM and similar practices, especially where they have been initiated by reliable teachers and have a solidly developed Christian faith to give inner form and meaning to the resulting experiences.
— M. Basil Pennington, Finding Grace at the Center by Thomas Keating, Thomas E. Clark, M. Basil Pennington