From *The Skeptical Review*, 1993 /July-August:
A question we are frequently asked is, "Why are you doing this?" By "this," the questioners mean evangelical skepticism, so what they are asking is why we spend so much time promoting freethought philosophy and especially rationalistic approaches to biblical interpretation. The question implies that we are doing something wrong or at least something that we are not entitled to do. Christians can publish papers, preach their religious beliefs over the airwaves, go door to door trying to convert the unchurched, and maintain a high profile in the community through various other evangelical activities, and no one wonders why they are doing this or questions their right to do it. However, if an atheist or an agnostic attempts to promote his philosophical views, his motives are impugned, and he is viewed with suspicion and branded a troublemaker.
Why are we evangelical about our skepticism? There is no simple answer to the question. A skeptic may be evangelical in his attitude for several reasons, not the least of which would be the value that he puts on truth. If there is intrinsic value in truth--and we believe there is--any truth that the skeptic may know should be shared with others. If he keeps it to himself, he denies others the benefits of it. If one knows a medical truth but chooses to keep it to himself, his morality is suspect. We are where we are today, scientifically and technologically, because those who discovered truth shared it with the societies they lived in. Where would we be today if this had not been done?