Who said "A man's word is his bond; break it, and you break yourself."?

This quote is attributed to Oberyn Martell.

A man's word is his bond; break it, and you break yourself. - Oberyn Martell

"A man's word is his bond; break it, and you break yourself."

Oberyn Martell Relationships

"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."

"The key to a happy marriage is communication."

"Marriage is about compromise and understanding."

"Life's greatest treasures are relationships."

"Trust is a luxury I can't afford."