"Without God, there is no virtue, because there's no prompting of the conscience. Without God, we're mired in the material, that flat world that tells us only what the senses perceive. Without God, there is a coarsening of the society. And without God, democracy will not and cannot long endure. If we ever forget that we're one nation under God, then we will be a nation gone under." -- Ronald Reagan
I absolutely adore that quote, simply for the irony in the history of the reference. "Without God, we're mired in the material, that flat world that tells us..."
Without early Christians stoning those who professed that the world was round, where would we be? ;)