“We should remember that the Declaration of Independence is not merely a historical document. It is an explicit recognition that our rights derive not from the King of England, not from the judiciary, not from government at all, but from God. The keystone of our system of popular sovereignty is the recognition, as the Declaration acknowledges, that 'all men are created equal' and 'endowed by their Creator with certain unalienable Rights.' Religion and God are no alien to our system of government, they're integral to it.”