I'd been thinking about Robin Williams a bit recently. His manager Larry Bresner told me that when Robin was asked by a German journalist on a press junket why the Germans had a reputation for humourlessness that Williams replied, "Because you killed all the funny people."
Robin Williams was exciting to me because he seemed to be sat upon a geyser of comedy. Like he didn't manufacture it laboriously within but had only to open a valve and it would come bursting through in effervescent jets. He was plugged into the mains of comedy.
I was aware too that this burbling and manic man-child that I watched on the box on my Nan's front room floor with a Mork action figure (I wish I still had that, he came in a plastic egg) struggled with mental illness and addiction.