Who said "A king must be strong above all else."?

This quote is attributed to Stannis Baratheon.

A king must be strong above all else. - Stannis Baratheon

"A king must be strong above all else."

Stannis Baratheon Strength

"Duty is the death of love."

"I am of the night."

"The night is dark and full of terrors."

"A king does not ask, he commands."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."