The source of Solzhenitsyn quote is here, in the speech titled "Bring God Back into Politics", with the very first line being

What is the role, the justifiable and necessary share, of morality in politics?

Well, Brown is trying to talk about values, and uses Solzhenitsyn who lamented Godless politics. A part of this speech indeed is about Russia, but I think he's condemning the whole Western body politics, more like.