Centering Prayer

http://www.livingrosaries.org/interview.htm

http://www.centeringprayer.com/

http://en.wikipedia.org/wiki/Centering_Prayer

http://en.wikipedia.org/wiki/Thomas_Keating

http://en.wikipedia.org/wiki/The_Cloud_of_Unknowing

http://en.wikiquote.org/wiki/The_Cloud_of_Unknowing