[Picard is in a dream and sees Q]
Q : Welcome, Picard. You're dead.
Captain Jean-Luc Picard : What?
Q : You're in Heaven. And I'm God.
Captain Jean-Luc Picard : You are NOT God.
Q : Blasphemy. I ought to smite you down right here.
Captain Jean-Luc Picard : The universe isn't THAT badly made.

Captain Jean-Luc Picard : THERE ARE FOUR LIGHTS.

Captain Jean-Luc Picard : [as Locutus of Borg] Resistance is futile. You will be assimilated.

Ro Laren : I was wrong. I'm sorry.
Counselor Deanna Troi : Don't be. You could just as well have been right.

Q : I have no powers! Q the ordinary.
Captain Jean-Luc Picard : Q the liar, Q the misanthrope!
Q : Q the miserable, Q the desperate! What must I do to convince you people?
Lieutenant Worf : Die.
Q : Oh, very clever, Worf. Eat any good books lately?

Dr. Beverly Crusher : If there's nothing wrong with me... there must be something wrong with the universe.

Captain Jean-Luc Picard : Lieutenant Worf, dispatch a subspace message to Admiral Hansen - We have engaged the Borg.

Captain Jean-Luc Picard : I understand what you've done here, Q. But I think the lesson could have been learned without the loss of 18 members of my crew.
Q : If you can't take a little bloody nose, maybe you ought to go back home and crawl under your bed. It's not safe out here. It's wondrous - with treasures to satiate desires both subtle and gross. But it's not for the timid.

Q : For that one fraction of a second, you were open to options you had never considered. That is the exploration that awaits you... not mapping stars and studying nebula... but charting the unknown possibilities of existence.

Captain Jean-Luc Picard : But... who knows - our reality may be very much like theirs. And all this... might just be an elaborate simulation running inside a little device... sitting on someone's table.

Guinan : Well, consider that in the history of many worlds there have always been disposable creatures. They do the dirty work. They do the work that no one else wants to do because it's too difficult or too hazardous. And an army of Datas... all disposable. You don't have to think about their welfare, you don't have to think about how they feel. Whole generations of disposable people.

[His first words to Wesley Crusher]
Captain Jean-Luc Picard : What the hell? Children are not allowed on the bridge.

Q : Temper, temper, Captain.
Captain Jean-Luc Picard : Get off my ship.
Q : I do so only because it suits me. But I cannot promise not to appear again.

Lieutenant Worf : I am Klingon. If you doubt it, a demonstration can be arranged.