Despite breaking with tradition by declining to attend his successor’s inauguration, President Donald Trump followed one Oval Office tradition when he left the White House on Wednesday morning: He left a note for President-elect Joe Biden.

Trump and Biden have reportedly not spoken directly to each other since the Nov. 3 election, and Trump has still not conceded an election he continues to claim was rife with fraud and misconduct.

However, he followed a tradition of leaving a note for Biden, and Vice President Mike Pence reportedly did the same for his successor, Kamala Harris.

Trump received a note from Barack Obama, who served the constitutionally limited two terms as president. Here, according to CNN, is the advice Obama left for Trump:

Dear Mr. President -

Congratulations on a remarkable run. Millions have placed their hopes in you, and all of us, regardless of party, should hope for expanded prosperity and security during your tenure.

This is a unique office, without a clear blueprint for success, so I don’t know that any advice from me will be particularly helpful. Still, let me offer a few reflections from the past 8 years.

First, we’ve both been blessed, in different ways, with great good fortune. Not everyone is so lucky. It’s up to us to do everything we can (to) build more ladders of success for every child and family that’s willing to work hard.

Second, American leadership in this world really is indispensable. It’s up to us, through action and example, to sustain the international order that’s expanded steadily since the end of the Cold War, and upon which our own wealth and safety depend.

Third, we are just temporary occupants of this office. That makes us guardians of those democratic institutions and traditions – like rule of law, separation of powers, equal protection and civil liberties – that our forebears fought and bled for. Regardless of the push and pull of daily politics, it’s up to us to leave those instruments of our democracy at least as strong as we found them.

And finally, take time, in the rush of events and responsibilities, for friends and family. They’ll get you through the inevitable rough patches.

Michelle and I wish you and Melania the very best as you embark on this great adventure, and know that we stand ready to help in any ways which we can.

Good luck and Godspeed,

BO

Obama also received some advice on Jan. 20, 2009, from outgoing President George W. Bush:

Dear Barack,

Congratulations on becoming our President. You have just begun a fantastic chapter in your life.

Very few have had the honor of knowing the responsibility you now feel. Very few know the excitement of the moment and the challenges you will face.

There will be trying moments. The critics will rage. Your “friends” will disappoint you. But, you will have an Almighty God to comfort you, a family who loves you, and a country that is pulling for you, including me. No matter what comes, you will be inspired by the character and compassion of the people you now lead.

God bless you.

Sincerely,

GW

Bill Clinton left this note for Bush on Jan. 20, 2001:

Dear George,

Today you embark on the greatest venture, with the greatest honor, that can come to an American citizen.

Like me, you are especially fortunate to lead our country in a time of profound and largely positive change, when old questions, not just about the role of government, but about the very nature of our nation, must be answered anew.

You lead a proud, decent, good people. And from this day you are President of all of us. I salute you and wish you success and much happiness.

The burdens you now shoulder are great but often exaggerated. The sheer joy of doing what you believe is right is inexpressible.

My prayers are with you and your family. Godspeed.

Sincerely, Bill

Clinton received these words of encouragement from George H.W. Bush, the man Clinton defeated in 1992 in a bitter reelection campaign:

JANUARY 20, 1993

Dear Bill,

When I walked into this office just now I felt the same sense of wonder and respect that I felt four years ago. I know you will feel that, too.

I wish you great happiness here. I never felt the loneliness some Presidents have described.

There will be very tough times, made even more difficult by criticism you may not think is fair. I’m not a very good one to give advice; but just don’t let the critics discourage you or push you off course.

You will be our President when you read this note. I wish you well. I wish your family well.

Your success now is our country’s success. I am rooting hard for you.

Good Luck — George