Mercy is to die quickly, perhaps even live in a tower.
7 seconds sound clip from the Braveheart (1995) movie soundboard.
You can hear this line at 02:32:18 in the Blu-ray version of the movie.
Quote context
[...]
- Come on, filth. Up on your feet.
- Stop it! Leave me. I said leave me!
- Milady.
- Sir, I come to beg you to confess all and swear allegiance to the king that he might show you mercy.
- Will he show mercy to my country?
- Mercy is to die quickly, perhaps even live in a tower.
- In time, who knows what can happen if you can only live.
- If I swear to him, then all that I am is dead already.
- You will die. It will be awful.
- Every man dies. Not every man really lives.
[...]