"If anyone does not understand this discourse, let him not worry about it, for if he does not find this truth in himself he cannot understand what I have said, for it is a discovered truth that comes immediately from the heart of God That we all may so live as to experience it eternally, may God help us. Amen."
This is from To Be Quit of God, by Meister Eckhart. I got it from Not of this World: A Treasury of Christian Mystacism, which is an excellent source for this sort of material. This is very much faith in the Buddhist sense, where faith is an experience and a discovery, not a belief in dogma.