King Jaehaerys once told me that madness and greatness are two sides of the same coin

King Jaehaerys once told me that madness and greatness are two sides of the same coin. Every time a new Rargaryen is born, he said, the gods toss the coin in the air and the world holds its breath to see how it will land.

George R. R. Martin, Storm of Swords 2: Blood and Gold