I stumbled upon an old Post Office in Hackney recently with a temporary exhibition called Posted. In one of the pieces Tracy Emins writes:
"All my life I have written letters -
I am passionate about it. its like having a diary that goes out into the world.
Letters seem to exist in another dimensions
some of my most intimate thoughts have been put down on paper and sealed up in an envelope -
sent off into the ether - Its my way of expressing myself -
It makes me calm almost content.
Tracy Emins