Who said "Those who fear me are wise to do so."?

This quote is attributed to Drogon.

Those who fear me are wise to do so. - Drogon

"Those who fear me are wise to do so."

Drogon Fear

"I am fire. I am death."

"Dracarys."

"A dragon is not a slave."

"I will burn them all."

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."