Reagan on Religion in America: "I submit to you that the tolerant society is open to and encouraging of all religions. And this does not weaken us; it strengthens us, it makes us strong. You know, if we look back through history to all those great civilizations, those great nations that rose up to even world dominance and then deteriorated, declined, and fell, we find they all had one thing in common. One of the significant forerunners of their fall was their turning away from their God or gods.
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 1984

Here is Mr. Reagan giving this remarkable speech.