A thank you note by David Bowie in reply to his first American fan letter:
When I called in this, my manager’s office, a few moments ago I was handed my very first American fan letter – and it was from you. I was so pleased that I had to sit down and type an immediate reply, even though Ken is shouting at me to get on with a script he badly needs. That can wiat (wi-at? That’s a new English word which means wait).
For anyone who launches a product, who bravely publishes that first book, who records music, who stands up for ideas of any kind — for anyone who performs for an audience without trackable means for people’s happiness — he or she knows the importance of receiving feedback. And a fan letter, invaluable.