Who said "I've lived long enough to know better."?

This quote is attributed to Sheriff Bell.

I've lived long enough to know better. - Sheriff Bell

"I've lived long enough to know better."

Sheriff Bell

Character in No Country for Old Men

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"How does an old man know he's gonna die?"

"You can't make it go away by not looking at it."

"I got no idea what I'm doing most of the time."

"You think when you wake up in the mornin yesterday don't count, don't it?"