Who said "Dreams are not merely visions of the night."?

This quote is attributed to Rhaegar Targaryen.

Dreams are not merely visions of the night. - Rhaegar Targaryen

"Dreams are not merely visions of the night."

Rhaegar Targaryen Dreams

"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."

"This is going to be a great show!"

"Dreams are what make life worth living."

"Never stop dreaming big."

"Dreams are what keep us going."