"It matters enormously to a successful democratic society like ours that we have three branches of government, each with some independence and some control over the other two. That's set out in the Constitution"

In this quote, Sandra Day O'Connor emphasizes the significance of having a system of checks and balances in a successful democratic society. She highlights the significance of having 3 different branches of federal government - the executive, legal, and judicial - each with their own powers and responsibilities. This department of power guarantees that no single branch becomes too powerful which there is a system of responsibility in location. O'Connor likewise points out that this system is clearly laid out in the Constitution, highlighting the value of following the concepts and guidelines set forth by this document. Overall, the quote highlights the essential function of balance and self-reliance in maintaining a practical democratic society.