Kate: You know, a few weeks before my sister died, we went to Virginia Beach for her birthday, just the two of us. We were laying there and I asked her what she was thinking. And she said "you know, Kate, if anything ever happens to me or Joe, just promise me that you'll take care of my little girl." And you know, of course I said I would. You know...nothing was going to happen to her. She was 24. And just like that, it did.
Hotch: You're a great mom.
Kate: Yeah, I took a year off when I got Meg and it was the best year of my life. And so, I think I want to do that for this one too.
Hotch: You'll always have a place here.
Kate: Thank you.

Life is about choices. Some we regret, some we're proud of. We are what we choose to be - Graham Brown

Kate

Danny: Patricia's mad at me.
Milena: We're not just your tenants, you know. She's your friend and she doesn't want you to get hurt. Neither do I.
Danny: Sorry. I don't know why this is so hard.
Milena: The right thing to do is always the hardest thing to do, and you're doing the right thing.
Danny: I just miss my mom so much.
Milena: That's why you have to keep going, and find the son of a bitch.

It is a man's own mind, not his enemy or foe, that lures him to evil ways - Buddha

Rossi

Milena: Mom. You shouldn't make him feel so bad.
Patricia: Look at him. He's drunk. He can't go out there.
Milena: He's fine.
Danny: I can hear you guys.
Patricia: We're just worried about you.
Danny: I'm okay.
Patricia: I'm not. You really scared me last night. All that blood.... I just don't want you to get hurt.
Danny: I'm sorry but you know I have to find that son of a bitch, especially before he finds you. And when I saw those disgusting whores, I couldn't just....I had to do something. This is our neighbourhood. We live here.
Patricia: Just be careful, okay? Promise me?
Danny: I promise.

Reality is merely an illusion, albeit a very persistent one - Albert Einstein

Reid

Paige: Hi! You must be Meg and Markayla. I'm Paige, Bobby's mom. Sorry I'm late. You guys ready for the show?
Markayla: Totally!
Paige: Hop in. You both look great!

Merrin: Mr. Hotch, I'm not a murderer.
Hotch: Yes you are. And I'm going to find out who turned you into one.

Your memory is a monster. It summons with a will of its own. You think you have a memory but it has you - John Irving.

Hotch

Hotch: Who is coming?
Christine: Mr. Scratch. He's already here.

Reid: Huh.
Morgan: What? You see something?
Reid: Encryption's a highly specialized skill set but it's fundamentally a mathematical process, which means the human process sometimes through technique can reveal where you learned it. I think I know where he learned how to do this.
Kate: Where?
Reid: Harvard. Which oddly enough isn't known for its advanced math program but it is known for one particular class. When you're good at math - good enough to get into Harvard - you take a math class called "Math 15". When you're better than that you take "Math 25", but when you're the best, the absolute best, you take "Math 55": Honors Advanced Calculus and Linear Algebra. Graduates are immediately employed by the U.S. Government because they're too dangerous to work anywhere else. More specifically, they're employed at the NSA.

Lewis: Don't cry for her. She was stupid, and wrong. She used to burn sage during the sessions. She said that made it safe to talk about Mr. Scratch. What do you see when you look at me? Do you see Mr. Scratch? You can talk now, I want to know. I want to know what you're feeling.
Hotch: That's my team. They know I'm here. They're going to come looking for me, and if you harm me...
Lewis: What are you talking about? Your phone isn't ringing.
Hotch: It was ringing.
Lewis: No it wasn't. Very interesting.
Hotch: You gave yourself away just now.
Lewis: I did?
Hotch: You slipped up.
Lewis: How do you figure?
Hotch: You have no idea, do you? [laughs] You said that she would burn sage, but how would you know that, unless she questioned you too. I know, Peter. I know how those interviews worked, how coercive they were, with children who were innocent and helpless. She questioned you about your father, and she wouldn't stop until she got the answers she wanted. So you gave them to her.
Lewis: Shut up. Oh that was good. Oh that was so good. That was so impressive, the way you got into my head. It makes me want to know how I get into yours.