Who said "Patience is the most underrated virtue in training."?

This quote is attributed to Misty.

Patience is the most underrated virtue in training. - Misty

"Patience is the most underrated virtue in training."

Misty Patience

"You're such a jerk, Ash!"

"Somebody's gotta keep you in line!"

"We're a team, and we stick together!"

"You can't just run off without thinking!"

"Patience is a virtue I'm still learning."

"I may be a redhead, but I'm not a hothead."

"Patience is a virtue."

"Patience is a virtue I never learned."