Because you're too damn mule mean, that's why. You always was.

6 seconds sound clip from the The Shootist movie soundboard.

You can hear this line at 01:04:04.266 in the DVD version of the movie.

Quote context

[...]

- Woman, I still have some pride. A man should be allowed his human dignity.

- I spent $3.00 on the train here. One-way.

- You and Dobkins are two sides of a counterfeit coin.

- I'll pay you back. I'll pay you both ways.

- What's wrong about a book?

- I'll not be remembered for a pack of lies.

- Because you're too damn mule mean, that's why. You always was.

- Why should you care what's happening? You're dying. I have to go on living, and you don't give a hoot in hell what happens! Why should you? You won't be here!

- God. And I loved you once.

- You bastard. May you rot to death!

- 'Twas blighted affection that made him exclaim 'Oh, willow, tit-willow, tit-willow'.

[...]