Spartans never retreat. Spartans never surrender.
7 seconds sound clip from the 300 movie soundboard.
You can hear this line at 01:23:46 in the Blu-ray version of the movie.
Quote context
[...]
- This battle is over when I say it is over.
- By morning, the Immortals will surround us. The Hot Gates will fall.
- Spartans! Prepare for glory!
- Glory? Have you gone mad? There is no glory to be had now. Only retreat or surrender. Or death.
- Well, that's an easy choice for us, Arcadian.
- Spartans never retreat. Spartans never surrender.
- Go spread the word. Let every Greek assembled know the truth of this.
- Let each among them search his own soul. And while you're at it, search your own.
- Children! Children. Gather round.
[...]