The notion of faith as a future promise or a reward reminds me of those scientific experiments that train rats to eat at a certain time. If you program them in a certain way, they do what you want. But spiritual discipline is not particularly a zoological practice. Buddha or God doesn't regard human beings as zoological specimens or as an interesting study program. People are real. . . . Faith is very solid when it is based on the experience of "now" rather than on future proof.
From "The Charnel Ground," in The Sadhana of Mahamudra Sourcebook, page 68.