BEVERLY HILLS, Calif. — Dear Justice Anthony Kennedy,

I would like to start with congratulatory wishes on your forthcoming 81st birthday.

As someone who has almost a decade and a half on you, I can tell you this: It may well be that the best part of your career has just begun. As a nonagenarian who has just completed the most prolific, productive five years of my life, I feel it incumbent upon me to urge a hearty octogenarian such as yourself not to put your feet up on the ottoman just yet. You have important and fulfilling work ahead of you.

When I turned 81, I had finished “Oceans Eleven” and was gearing up for “Oceans Twelve” while also writing another book, which led me to a cross-country book tour.

I know what it means to be your age. I know the problems that come with the journey. But these are not ordinary times, and you, sir, are anything but an ordinary man.