On January 11, 1989, Ronald Reagan made his last address from the Oval Office. His goal was to connect with his fellow Americans and share a few thoughts, some of which he had been “saving for a long time.” One of these was his view of the United States as a “shining city upon a hill.” Reagan used his vision of that city to remind Americans of our common values.

John Winthrop, the Puritan Pilgrim, takes credit for the earliest use of the phrase “city upon a hill” in the American context. Winthrop extolled qualities like justice, humility, patience and community that he believed should mark the Puritans’ service of God in the New World. “For we must consider that we shall be as a city upon a hill. The eyes of all people are upon us,” he preached.

Reagan took inspiration from Winthrop and frequently made the words “city upon a hill” his own. For a Generation X’er like me, Reagan’s frequent invocation, but particularly in this parting address, had profound effect as I searched for a spot on the political spectrum in the late 1980s and landed somewhere just right of center. More than 18 minutes into his 21-minute speech, Reagan acknowledged thinking about these words a lot during the waning days of his presidency and wondering if he had “ever quite communicated” what he meant. So he seized the moment:

“In my mind, it was a tall, proud city built on rocks stronger than oceans, windswept, God blessed, and teeming with people of all kinds living in harmony and peace — a city with free ports that hummed with commerce and creativity, and if there had to be city walls, the walls had doors, and the doors were open to anyone with the will and the heart to get here. That’s how I saw it, and see it still.”

If you break it down, this passage is consistent with the principles and policies that we could stand to reaffirm today.

Built on rocks, God blessed. Reagan believed national pride and patriotism were important but should be thoughtful and informed. For him, you could be confident in knowing that America is special, even exceptional, and built on a firm foundation of freedom.

Yet you also should be humble enough to know that our freedom is fragile and not to be taken for granted. Families, schools and communities have a responsibility, Reagan believed, to ensure that all young people know “America is freedom.” The way to get there, he implored, was to teach history better and foster civic engagement.

Humming with commerce and creativity. Reagan believed in American global leadership, both political and economic. For him, you could actively engage in markets abroad and protect the needs of small business and working-class Americans at home. The two were not mutually exclusive, as they sometimes are viewed today.

Open doors, people of all kinds. Reagan believed that America must remain “a beacon … for all the Pilgrims from all the lost places who are hurtling through the darkness.” His goal, articulated early in his presidency, was a policy that is “fair to our own citizens while it opens the door of opportunity for those who seek a new life in America.”

These three principles offer a way of forging the unity that so many of us desire. Our national motto, e pluribus unum, translates into “one out of many.” A full embrace of these values would help us remain a diverse people with a common purpose.

Reagan used the values of Winthrop’s “shining city on a hill” to describe an America in which broad sectors of society could find themselves. He pursued policies that broadened prosperity, accelerated communism’s collapse, and rallied voters of all kinds. Young and old, white collar and blue collar, Republican and Democrat.

For Reagan, I think the “shining city upon a hill” meant a nation that was both confident and humble, capitalist and compassionate, principled but able to compromise, both embracing of our diversity and remaining true to the universal foundation of freedom that has bound us together in this democracy project for more than 240 years. All qualities that are under stress in our political system today.

Besides Winthrop, Reagan may be the single American most associated with the “city upon a hill” phrase. But the fact that Republicans and Democrats, presidents and non-presidents alike, have all found inspiration in a phrase first uttered on a ship bound for the New World nearly 400 years ago reinforces that we’ve always had common purpose as a nation.

At times we have faltered in its pursuit and needed a call to action to get us on track. Now is one of them. These words helped found a nation. They can help us reaffirm our nation again and again.