Quotation from: The Picture of Dorian Gray

Written by: Oscar Wilde

Dorian Gray drew a long breath. "You have been on the brink of
committing a terrible crime, my man," he said, looking at him sternly.
"Let this be a warning to you not to take vengeance into your
own hands."

"Forgive me, sir," muttered James Vane. "I was deceived.
A chance word I heard in that damned den set me on the wrong track."