That means that anyone we haven't unplugged is potentially an agent.
7 seconds sound clip from the The Matrix movie soundboard.
You can hear this line at 00:57:46 in the Blu-ray version of the movie.
Quote context
[...]
- This... this isn't the Matrix?
- No.
- It's another training program designed to teach you one thing:
- If you are not one of us, you are one of them.
- They can move in and out of any software still hardwired to their system.
- That means that anyone we haven't unplugged is potentially an agent.
- Inside the Matrix they are everyone and they are no one.
- We are survived by hiding from them, by running from them.
- They are the gatekeepers. They're guarding all the doors. They are holding all the keys...
- Which means that sooner or later, someone is going to have to fight them.
[...]