Who said "True courage is standing alone against the world."?

This quote is attributed to Rhaegar Targaryen.

True courage is standing alone against the world. - Rhaegar Targaryen

"True courage is standing alone against the world."

Rhaegar Targaryen Courage

"The dragon has three heads."

"I have a duty to my realm and to the future."

"Music is the voice of the soul."

"Love is the most powerful force in the world."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."