The destruction workd by positivism is the consequence of two fundamental assumptions... the splendid unfolding of the natural sciences was co-responsible with other factors for the assumption that the methods used in mathematizing sciences of the external world were possessed of some inherent virtue an that all other sciences would achieve comparable success if they followed the example and accepted these methods as their model... [and] the methods of the natural sciences were a criterion for theoretical relevance in general. From the combination of the two assumptions followed the well-known series of assertions that a study of reality could qualify as scientific only if it used the methods of the natural sciences... [T]this second assumption subordinates theoretical relevance to method and thereby perverts the meaning of science. Science is a search for truth concerning the nature of the various realms of being.
Well, it's a seductive argument in some ways, and when one hears the rigid views of Dawkins et al, one can see what Voegelin means. But this is really a piece of sophistry, as revealed by a later quote:
The truth of man and the truth of God are inseparably one. Man will be in the truh of his existence when he has opened his psyche to the truth of God; and the truth of God will become manifest in history when it has formed the psyche of man into receptivity for the unseen measure.
Really, that is tendentious to say the least. Granted, we can take scientific examination to extremes, but we can also take faith to extremes. What evidence can there be to back up that extraordinarily bold statement?