I just came across a real gem of a letter on Letters of Note, sent by C.S. Lewis to a young American fan in 1956. Isn’t it lovely and quite remarkable that he replied to his fan mail in such a thoughtful and personal way?
Aside from that, though, this letter stood out to me because of a particular piece of advice shared in it, which I think all e-learning designers (indeed, all writers!) should be mindful of: