Lemony Snicket quote that's related to Harry Potter

I was recently re-reading one of the Series of Unfortunate Events books - number eight, The Hostile Hospital.  I came across an interesting quote.
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[When Klaus is surrounded by villains, and all he has at his disposal is a rusty knife]

"Get back!" Klaus cried.  "This knife is very sharp!"
"You can't kill all of us," the hook-handed man replied.  "In fact, I doubt you have the courage to kill anyone."
"It doesn't take courage to kill someone," Klaus said.  "It takes a severe lack of moral stamina."
***
In light of the last events of the sixth book, particularly the ones concerning Draco Malfoy...that is very interesting.