Who said "A true friend is worth more than a thousand allies."?

This quote is attributed to Rhaegar Targaryen.

A true friend is worth more than a thousand allies. - Rhaegar Targaryen

"A true friend is worth more than a thousand allies."

Rhaegar Targaryen Friendship

"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."

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."