Who said "A healthy mind requires as much care as a healthy body."?

This quote is attributed to Oberyn Martell.

A healthy mind requires as much care as a healthy body. - Oberyn Martell

"A healthy mind requires as much care as a healthy body."

Oberyn Martell Health

"I am the viper. When the time comes, I will strike."

"Elia of Dorne. My sister. You raped her. You murdered her children."

"I want to look the man in the eye and see the fear in his heart."

"The man who passes the sentence should swing the sword."

"You can't expect to be happy if you're surrounded by mess."

"Health and happiness - these are true wealth"

"How can you live like this? It's like a pigsty!"

"You're going to get sick living like this."