Faith is belief in spite of reason.
Faith
1. confidence or trust in a person or thing: faith in another's ability.
2. belief that is not based on proof: He had faith that the hypothesis would be substantiated by fact.
3. belief in God or in the doctrines or teachings of religion: the firm faith of the Pilgrims.
4. belief in anything, as a code of ethics, standards of merit, etc.: to be of the same faith with someone concerning honesty.
5. a system of religious belief: the Christian faith; the Jewish faith.
6. the obligation of loyalty or fidelity to a person, promise, engagement, etc.: Failure to appear would be breaking faith.
7. the observance of this obligation; fidelity to one's promise, oath, allegiance, etc.: He was the only one who proved his faith during our recent troubles.
8. Christian Theology. the trust in God and in His promises as made through Christ and the Scriptures by which humans are justified or saved.
—Idiom
9. in faith, in truth; indeed: In faith, he is a fine lad.
Not in spite of reason but sometimes in the absence of reasonable proof. Not exactly the same thing at all. I have faith that there is something you have faith in without being able to prove it such as perhaps your faith that your love for another is reciprocated. Sorry to be so anal about it but its one of those words that has been twisted so badly no one is really sure what it means, heck even the dictionary I am quoting shows the signs of being corrupted by secular usage.
On another note check out http://rosicrucian.org/publications/positio.pdf these folks have quite a bit to say about religion, science, politics, and economics and they say it better than I can. Like I keep saying about everything else in this thread, I am not a Rosicrucian or a Christian (they seem to be bent towards that way even though I would call them deists) and I don't agree with everything they say but it should still be interesting to many of you who have posted in this thread. Here is a quick quote
It has become necessary to rethink the question of knowledge. For instance, what is the true meaning of being able to reproduce an experience? Is a proposition that cannot be verified in all cases necessarily false? Surpassing the rational dualism that took hold in the 17th century seems imperative to us, for true knowledge lies in this “surpassingness.” Moreover, simply because the existence of God cannot be proved does not justify the declaration that God does not exist. Truth may have many faces; to remember only one in the name of rationality is an insult to reason. Besides, can we truly speak of rational or irrational? Is science itself rational, when it believes in chance? In fact, it seems to us much more irrational to believe in chance rather than to not believe in it. On this same subject, we must say that our Order has always been against the common notion of chance, which it looks upon as an easy solution and resignation in the face of reality. We agree with Albert Einstein’s comment about chance when he described it as: “The Path that God takes when [God] wants to remain anonymous.”