Why was that corner chosen to write it on? I will tell you. See that candle on the mantelpiece. It was lit at the time, and if it was lit this corner would be the brightest instead of the darkest portion of the wall.” (Inspector Lestrade)

" ‘Rache,’ is the German for ‘revenge’; so don’t lose your time looking for Miss Rachel.”

"It was simply a blind intended to put the police upon a wrong track, by suggesting Socialism and secret societies. It was not done by a German. The A, if you noticed, was printed somewhat after the German fashion. Now, a real German invariably prints in the Latin character, so that we may safely say that this was not written by one, but by a clumsy imitator who overdid his part." (
Sherlock Holmes)