The Mentalist quotes
Grace Van Pelt: How did you know Archie was gay?
Patrick Jane: Well, Archie Sr. named his son after himself like a king. He was hoping for an heir, yet there's not one photo of Junior in the house.
Grace Van Pelt: You think he's ashamed of him.
Patrick Jane: Well, look at this room. Traditional masculine decor. Bold nautical themes.
Grace Van Pelt: It's like a furniture catalog threw up in here.
Patrick Jane: Yes. These are not the choices of a teenager. I think Archie Sr. personally decorated this room in the attempt to butch up his gay son.
Patrick Jane: Smells of juniper.
Kimball Cho: Cologne?
Patrick Jane: Uh... I don't... no, more like... cheap gin. Drunken out of necessity, not pleasure. So he drank alone, he let the killer in. He knew him, or her. They argued...
Deb Granger: How'd you know they argued?
Patrick Jane: Well, he is dead.
Deb Granger: What did they argue about?
Patrick Jane: Well, I don't know. What do people argue about? Money? Power? Love? Jealousy?
Deb Granger: Revenge. Sorry, I shouldn't do that.
Patrick Jane: No, jump right in. This is a murder. It's exciting.
Memory is unreliable because the untrained brain has a crappy filing system. It takes everything that happens to you and throws it all willy-nilly into a big, dark closet. When you go in there looking for something, all you can find are the big, obvious things like when your mom died, or stuff that you don't really need, stuff that you're not looking for, like the words to "Copacabana." You can't find what you need. But don't panic, because it is still there.