You know, it just occured to me that technically we're all inside all of his Klein bottles. Or all Klein bottles, really.

I just bought one a few months ago after putting it off for years. He sent the most charming hand written note and a series of selfies proving that he personally packed it! A true gem.

I got one from him a couple of years ago. He even sent me photos while packing and shipping, and a handwritten note along with the bottle. An absolute stand-up guy.