What else is the whole life of mortals but a sort of comedy, in which the various actors, disguised by various costumes and masks, walk on and play each one his part, until the manager waves them off the stage?
About Face -
(Season 03 - Episode 06)
Quoted by Aaron "Hotch" Hotchner
David Rossi: I think he went back to relive his crime. When Zoe showed up, she became a victim of opportunity.
Aaron "Hotch" Hotchner: That's the same theory we arrived at on the plane. He strangled her with her own scarf. He didn't plan it, I think she surprised him.
David Rossi: I told her not to stop until she found the answers she was looking for. I didn't think she'd go to a crime scene.
Aaron "Hotch" Hotchner: Her mom said it's something that she does all the time. She probably would have gone anyway.
David Rossi: But it's because of what I said that she was encouraged to go there last night.
Aaron "Hotch" Hotchner: Dave, what are you doing?
David Rossi: She came to me and I dismissed her.
Aaron "Hotch" Hotchner: Try not to personalize it.
David Rossi: I was the last one she talked to before she was murdered. How is this not personal, Aaron?
Zoe's Reprise - (Season 04 - Episode 15)