Who said "I cannot afford mercy. It is a luxury of weak kings."?

This quote is attributed to Stannis Baratheon.

I cannot afford mercy. It is a luxury of weak kings. - Stannis Baratheon

"I cannot afford mercy. It is a luxury of weak kings."

Stannis Baratheon Power

"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."

"Power without control is just destruction."

"Power is not about control, it's about influence"

"The world doesn't need me to be the hero. It just needs me to be dangerous."

"The claws come out when I need them to."