- [O'Brien is faced with two Odos, one of them an impostor]
- Odo II: You'd better make a decision. We're running out of time.
- Chief O'Brien: I 've got more important things to do than play 'choose the Changeling'!
- [last lines]
- Odo: Captain, there's something you need to know. The Changeling, before he... died - he whispered something to me.
- Captain Sisko: Go on.
- Odo: He said..."You're too late. We are everywhere."
- Major Kira: Well, now that you have another pip on your collar, does that mean I can't disagree with you anymore?
- Captain Sisko: No. It just means, I'm never wrong.
- Major Kira: Ah - we'll see about that.
- Jake Sisko: Dad, there's something I've been wanting to say to you for a long time. And now that I finally have the chance, I'm gonna make it short and simple.
- [he approaches Sisko and pins a fourth pip on his father's collar]
- Jake Sisko: Congratulations, 'Captain' Sisko!
- Michael Eddington: Captain - I just want to say that... I agree with what Chief O'Brien said. About your promotion. It's about time.
- Captain Sisko: I appreciate the sentiment, Commander, but it really doesn't change anything. I have the assignment I want, I have the crew that I want. The rank doesn't make much difference.
- Michael Eddington: You'd be surprised. People don't enter Starfleet to become commanders, or admirals, for that matter. It's the captain's chair that everyone has their eye on. That's what I wanted when I joined up... You don't get to be a captain wearing a gold uniform.
- Captain Sisko: You could always transfer from Security to Command.
- Michael Eddington: [with fake naivety] Then who would protect the Ambassador?
- [having lost any control of the Defiant's systems, Sisko has initiated the auto-destruct sequence]
- Chief O'Brien: I think I may be able to shut down the Changeling's force fields, and gain access to the sabotaged systems. The only problem is, we may lose our force fields too.
- Federation Computer: Auto-destruct in seven minutes.
- Captain Sisko: Just tell me how long it will take.
- Chief O'Brien: Well, I guess it'll have to be less than seven minutes, won't it?
- Captain Sisko: That'd be my suggestion.
- Quark: [celebrating Sisko's promotion to captain] This calls for a toast!
- Doctor Bashir: That had better not be from a replicator, Quark.
- Quark: Chateau Cleon, 2303. I already put it on your account.
- Captain Sisko: My son, the writer, thinks I should say something profound on this occasion. He even offered to write me a brief statement. I told him I'd take care of it myself; but as it turns out, the only thing I can think of is: Begin Captain's log, stardate 48960.9.
- Odo: [on using a phaser on a fellow Changeling] In the history of my people, no Changeling has ever harmed another. I'd hate to be the first.
- Michael Eddington: Apparently that Changeling doesn't feel the same way. If we don't stop him, no one on board will escape unharmed, including you.
- Odo: You may be right. But I've been a Security officer most of my humanoid existence; and in all that time, I've never found it necessary to fire a weapon, or take a life. I don't intend to start now.
- [first lines]
- Commander Sisko: Commander's log, stardate 48959.1 - It is with mixed emotions that I record this, my final Commander's log. The last three years have been the most demanding and rewarding of my career. I can only hope that the future will hold even greater challenges.
- Michael Eddington: [Eddington fires off a phaser blast in the Jefferies tube trying to expose a Changeling infiltrator aboard the Defiant] Don't you ever sweat?
- Odo: No, I don't. It's the modified phaser beam. It's heating up the air.
- Michael Eddington: You know... this would be a lot easier if we knew where he was hiding. Where would you be if you were him?
- Odo: I wouldn't know. I'm not him.
- Michael Eddington: He is one of your people. Can't you put yourself in his position? Try to anticipate his next move?
- Odo: I've thought about it. But the truth is... I don't understand my people all that well.
- Michael Eddington: That's too bad.
- Odo: Yes, it is.
- Michael Eddington: For all of us.