Of course!

The Rust Cohle who quits the force is ten years away from the one being interviewed by the police. It has to be a clue! And wait, McConaughey also said it gives him "something to chase." Is 2002 Rust chasing 2012 Rust, because 2012 Rust is the Yellow King? Or, is 2012 Rust the hero for 2002 Rust, because 2012 Rust is going to solve the case that 2002 Rust couldn't? Just tell me which old, weird book I have to read to figure this out.

Finally, was the clue McConaughey was giving not about True Detective at all, but a hint that his next 180-degree career turn is going to involve a move into the world of self-help audiobooks?