The letter that then President Barack Obama wrote to current President Donald Trump contained several observations about the office of the president and, of course, a lecture.

CNN gained access to the letter, which reads in part:

“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.”

How interesting to hear about the rule of law from a president who said the Constitution is “really just a piece of parchment.”