Picard:
 
"I will not sacrifice the Skunkworks-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 !!! and NO FURTHER !!"

http://www.youtube.com/watch?v=cGF1NP-FrCU&feature=related