President Donald Trump and former President Barack Obama talk on the East steps of the US Capitol after inauguration ceremonies on January 20, 2017, in Washington, DC.

On Sunday, CNN exclusively reported on the contents ofa handwritten letter former president Barack Obama addressed to Donald Trump prior to leaving the Oval Office. In a tradition carried out by at least three prior presidents, CNN reports, Obama wrote a letter to Trump, reflecting on his eight years as president and detailing four points of advice. Obama congratulated the newly elected President Trump on his new job and reminded him that "millions have placed their hopes" in him. Trump himself called the note a "beautiful letter" during a press conference two days after receiving it. It was just over twice as long as those written by three previous presidents' letters, according to an analysis by CNBC. (We counted! See this doc.) "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," Obama wrote. "Still, let me offer a few reflections from the past 8 years." Here are Obama's four points of advice to Trump ahead of his new job.

Build more ladders of success

In his first point, Obama says that, unlike himself and Trump, not everyone has been blessed with good fortune. Ladders of opportunity tweet "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," Obama writes. That resonated with core policy goals articulated by the former Illinois U.S. senator. Obama spent much of his tenure emphasizing the creation of more economic opportunities for the middle class.

Sustain the international order

Obama stated that American wealth and safety depend on maintaining the "international order that's expanded steadily since the end of the Cold War." He added: "American leadership in this world really is indispensable." Obama also wrote that that it's up to the American president to maintain U.S. leadership "through action and example."

Leave the 'instruments of our democracy at least as strong as we found them'

Obama notes that, as president, Trump became a guardian of protecting basic and constitutional rights upon which the U.S. prides itself. Examples Obama gave included the rule of law, separation of powers, equal protection and civil liberties. Obama constitution tweet "We are just temporary occupants of this office," Obama reminds Trump. "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."

Take time for friends and family