Who said "Justice must be tempered with mercy to be true justice."?

This quote is attributed to Margaery Tyrell.

Justice must be tempered with mercy to be true justice. - Margaery Tyrell

"Justice must be tempered with mercy to be true justice."

Margaery Tyrell Justice

"A woman's greatest weapon is the ability to make men want to please her."

"I do love the people of the Reach, truly I do."

"The rose has thorns as well as beauty."

"Every woman wants to be a queen in her own right."

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."