Who said "Madness and greatness are two sides of the same coin."?

This quote is attributed to Lannister.

Madness and greatness are two sides of the same coin. - Lannister

"Madness and greatness are two sides of the same coin."

Lannister Philosophy

"A Lannister always pays his debts."

"I am the god of tits and wine."

"You are an awful man."

"I drink and I know things."

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."