Who said "The only true friendship is between equals in power."?

This quote is attributed to Drogon.

The only true friendship is between equals in power. - Drogon

"The only true friendship is between equals in power."

Drogon Friendship

"I am fire. I am death."

"Dracarys."

"A dragon is not a slave."

"I will burn them all."

"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."