Who said "I am grateful for the sky that sets me free."?

This quote is attributed to Drogon.

I am grateful for the sky that sets me free. - Drogon

"I am grateful for the sky that sets me free."

Drogon Gratitude

"I am fire. I am death."

"Dracarys."

"A dragon is not a slave."

"I will burn them all."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"