I found an interesting blog post about Belief by DONALD MICHAEL KRAIG.
Check it out: I Wouldn’t Have Seen It If I Hadn’t Believed It
He quotes from several people. The quotes I think say so much. Here is the quotes to ponder:
The materialist fundamentalists are funnier than the Christian fundamentalists, because they think they’re rational! …They’re never skeptical about anything except the things they have a prejudice against. None of them ever says anything skeptical about the AMA, or about anything in establishment science or any entrenched dogma. They’re only skeptical about new ideas that frighten them. - Robert Anton Wilson
The most beautiful thing we can experience is the mysterious. It is the source of all true art and science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand wrapt in awe, is as good as dead.—Albert Einstein
Whether you think you can, or you think you can’t—you’re right.—Henry Ford
People who say it cannot be done should not interrupt those who are doing it.—George Bernard Shaw
This applies to many areas of our lives. Donald M. Kraig also give an interesting mental exercise to shelve or remove the doubt and disbelief. While the blog is about magick, this exercise is pretty nondenominational and open to all regardless of your spirituality.