Who said "The strong survive. The weak become cinders."?

This quote is attributed to Drogon.

The strong survive. The weak become cinders. - Drogon

"The strong survive. The weak become cinders."

Drogon Strength

"I am fire. I am death."

"Dracarys."

"A dragon is not a slave."

"I will burn them all."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."