Below is the last three paragraphs of his infamous speech. Audio can be found here. Quotes from Winston found at Conservapedia.
Notice Churchill had no problem calling western civilization Christian civilization and opposed this civilization to "a new Dark Age made more sinister...by the lights of perverted science." Notice he did not consider Hitler a leader of Christianity or even a perverted leader of Christianity but rather of perverted science. So in his mind Britain was standing for Christian civilization being opposed by perverted science. See a great documentary on what this perverted science may have been influenced by at ExpelledTheMovie.com.
"I expect that the Battle of Britain is about to begin. Upon this battle depends the survival of Christian civilization. Upon it depends our own British life, and the long continuity of our institutions and our Empire. The whole fury and might of the enemy must very soon be turned on us.
Hitler knows that he will have to break us in this Island or lose the war. If we can stand up to him, all Europe may be free and the life of the world may move forward into broad, sunlit uplands. But if we fail, then the whole world, including the United States, including all that we have known and cared for, will sink into the abyss of a new Dark Age made more sinister, and perhaps more protracted, by the lights of perverted science.
Let us therefore brace ourselves to our duties, and so bear ourselves that if the British Empire and its Commonwealth last for a thousand years, men will still say, 'This was their finest hour.'"
Found this interesting quote:
"I have nothing to offer but blood, toil, tears and sweat. We have before us an ordeal of the most grievous kind. We have before us many, many long months of struggle and of suffering. You ask, what is our policy? I can say: It is to wage war, by sea, land and air, with all our might and with all the strength that God can give us; to wage war against a monstrous tyranny, never surpassed in the dark, lamentable catalogue of human crime."
