Justice League, Season 2

[John discovers he can no longer use his ring properly]

Katma Tui:
Then we start over. I trained you once, I can do it again.

Green Lantern:
Back to basics? I don't think so.

Katma Tui:
The problem with half the Corps, you included, is that once you learn to use your rings like jackhammers, you forget the subtleties of manipulation and control!

Green Lantern:
I know, I know - "the mind is the weapon, not the metal."

Katma Tui:
At least you remember that much. It's time to relearn what you've learned.

Green Lantern:
Now you sound like Yoda.

Katma Tui:
Look, you have two choices: let me help you retune your mental disciplines, or you can live with your emerald impotence.

[Flash walks by at the last word]

Flash:
Impotence? [John and Katma look at him] Right...I-I was just goin' over there...

[Speeds off]