"A letter?" repeated Professor McGonagall faintly, sitting back down on
the wall. "Really, Dumbledore, you think you can explain all this in a
letter? These people will never understand him! He'll be famous -- a
legend -- I wouldn't be surprised if today was known as Harry Potter day
in the future -- there will be books written about Harry -- every child
in our world will know his name!"
"Exactly," said Dumbledore, looking very seriously over the top of his
half-moon glasses. "It would be enough to turn any boy's head. Famous
before he can walk and talk! Famous for something he won't even
remember! Can't you see how much better off he'll be, growing up away
from all that until he's ready to take it?"