Mary: Let me ask you something. Why are you alive?
John Preston: I live to safeguard the continuity of this society, to serve Libria.
Mary: It's circular. You exist to continue your existence. What's the point?
John Preston: What's the point of your existence?
Mary: To feel! Because you have never done it, you can never know it. But it's as vital as breath. And without it, without love, without anger, without sorrow, breath is just a clock... ticking.
See Equilibrium. See it now.