My greatness will be better demonstrated when Wallace returns to Scotland and finds his country in ashes.

11 seconds sound clip from the Braveheart (1995) movie soundboard.

You can hear this line at 01:53:43 in the Blu-ray version of the movie.

Quote context

[...]

- You may return to your embroidery.

- Humbly, milord.

- You brought back the money, of course.

- No. I gave it to ease the suffering of the children of this war.

- That's what happens when you send a woman.

- Forgive me, sire. I thought that generosity might demonstrate your greatness to those you mean to rule.

- My greatness will be better demonstrated when Wallace returns to Scotland and finds his country in ashes.

- William! There's riders approaching!

- Personal escort of the princess. Must have made an impression. I didn't think you were in the tent that long.

- Aye.

- Mademoiselle.

(In french) A message from my mistress. -Thank you.

[...]