This was originally posted on Facebook, seeing as it’s a personal thing, but I’m going to post it here as well for the sake of completeness.
There is a speech by Picard from Star Trek: First Contact that’s stayed with me ever since I saw the movie, years ago, in the cinema. It goes like this:
“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 further!”