I have just heard the sad news of the death of my good friend, the talented and rather wonderful Ron Silver.
Ron had been ill for quite a while and we knew his cancer was terminal. Yet somehow when you saw him, even though he looked ill, his wit and vivacity made you think he would keep going for ever.
He will probably be best known here for his role as Bruno Gianelli, the political consultant to Jed Bartlett and later Arnie Vinick. But he was also stunning as Alan Dershowitz in Reversal of Fortune and as Angelo Dundee in Ali.
Ron was one of the most committed political figures in Hollywood, but not in the usual way.
A brilliant debater and public speaker, he had been the actor's union leader for a decade and a well known advocate of abortion rights. And then, in 2004 he took one of the biggest political steps in his life. He endorsed George Bush for President.
Meeting him in New York after he had addressed the Republican Convention, he explained to me that he had taken this big step because he believed that Islamist terrorism was a danger to liberal values, and he didn't believe the Democrats realised this.
He expected to pay a big professional price. And he did. He found it much more difficult to get big roles in quality productions after his Bush endorsement. But he did get another stint as Bruno, with Gianelli switching sides to become a Republican.
(Incidentally, for West Wing fans, Ron told me that he had originally been sounded out to play Toby, but had to turn down the opportunity because he was in a sitcom with Kirsty Alley)
He didn't regret it though. His politics were too important to him. Oliver Stone sounded him out about playing Paul Wolfowitz in his film W, but Ron didn't want Stone's words in his mouth and in any case, he had just discovered he was ill.
Ron wasn't a Republican, though. He remained a liberal. And in 2008 he voted for Barack Obama, telling me that Sarah Palin was the final straw.
If it is possible to reprise his roles and explain his politics, it is not so easy to recapture his spirit. When I was last in New York, he took me to dinner with Joe Klein and Ann Coulter at the same time. He just loved the jokes, the arguments, the crackle, the political buzz.
He was larger than life.
Just a few months ago, he visited George Osborne (also a good friend of his) and me in London and we had dinner and the usual laughs as if nothing was wrong. But when he left, we knew we probably wouldn't see him again, however much we pretended to ourselves that this wasn't so and made plans for a further visit.
We will both miss him very much.
UPDATE: Roundup of Ron Silver tributes