With the first link, the chain is forged. The first speech censored, the first thought forbidden, the first freedom denied, chains us all irrevocably.

- Star Trek: The Next Generation (The Drumhead)

I will not sacrifice the Enterprise. We’ve made too many compromises already, too many retreats. They invade our space and we fall back. They assimilate entire worlds and we fall back. Not again. The line must be drawn here! This far, no farther! And I will make them pay for what they’ve done!

- Star Trek: First Contact