My favorite part of the film documentary, "Into Great Silence" a film about the Carthusian Monks, is an interview that takes place with an elderly, frail, blind monk.
Unfortunately, this video clip shows only about half of the interview. I'm convinced that the wisdom the monk shares during the interview is the result of a life spent in silent contemplation and prayer. He demonstrates a peace and contentment that goes beyond anything that the material world has to offer.
The interview begins about 1 minute and 10 seconds into this short video clip.