Damien Thorn: Yes. Born in the image of the greatest power in the world! The Desolate One. Desolate because his greatness was taken from him and he was cast down. But he has risen, Mark, in me.
Damien Thorn: Why are you running away from me, Mark?
Mark Thorn: I know who you are.
Damien Thorn: You do?
Damien Thorn: Why? Why me?
Dr. Kane: Hello, Ben? I need to see you urgently can I come down? No-no, there is something here that I just don't understand.
Dr. Charles Warren: Richard, you know me to be a rational man, but what I'm about to tell you is not rational.
Paul Buher: Do you know what exactly I do for Thorn Industries?
Damien Thorn: Not really, Sir.
Paul Buher: You should. You should know everything about the Thorn business. After all it will be yours one day.
Damien Thorn: And Mark's.
Paul Buher: And Mark's. Of course.
Ann Thorn: What are you doing?
Richard Thorn: The daggers must be here somewhere.
Ann Thorn: What you want them for? No! No.
Richard Thorn: He's not human.
Ann Thorn: He's your brother's son, he's a boy you've loved for seven years.
Richard Thorn: The boy has got to die.
Answer: Damien is still very conflicted, having thought of himself as a regular boy his entire life. While he is slowly embracing his nature, he hasn't lost his emotions, and he's crying because he's actually sad that he had to kill his friend.