I didn't really have time to think about it, but I've had plenty of time to think about this.

6 seconds sound clip from the Tombstone (1993) movie soundboard.

You can hear this line at 01:46:51 in the Blu-ray version of the movie.

Quote context

[...]

- I spent my whole life not knowin' what I wanted outta life, just chasin' my tail. Now for the first time I know exactly what I want, and who. And that's the damnable misery of it.

- What makes a man like Ringo, Doc? What makes him do the things he does?

- A man like Ringo got a great empty hole right through the middle of him. He can never kill enough or steal enough or inflict enough pain to ever fill it.

- What does he need?

- Revenge.

- For what?

- Bein' born.

- It all happened so fast with Curly Bill...

- I didn't really have time to think about it, but I've had plenty of time to think about this.

- I can't beat him, can I?

- No.

- Wait. I'm goin' with ya.

- Oh, God. I'm sorry. I'm sorry, Wyatt.

- It's all right, Doc.

[...]