Some men have a foolish habit of telling their business secrets. If they
make money they like to tell their neighbors how it was done. Nothing
is gained by this, and ofttimes much is lost. Say nothing about your
profits, your hopes, your expectations, your intentions. And this
should apply to letters as well as to conversation. Goethe makes
Mephistophilles say: "Never write a letter nor destroy one." Business
men must write letters, but they should be careful what they put in
them. If you are losing money, be specially cautious and not tell of it,
or you will lose your reputation.