Game of Thrones, Season 5

Barristan Selmy:
Your Grace? A word, please, I beg you.

Daenerys Targaryen:
About what?

Barristan Selmy:
About your father. About the Mad King.

Daenerys Targaryen:
The "Mad King"? You're here to remind me of my enemies' lies? Consider me reminded.

Barristan Selmy:
Your Grace. I served in his Kingsguard. I was at his side from the first. Your enemies did not lie.

Daenerys Targaryen:
Go on.

Barristan Selmy:
When the people rose in revolt against him, your father set their towns and castles aflame. He murdered sons in front of their fathers. He burned men alive with wildfire, and laughed as they screamed. And, his efforts to stamp out dissent led to a rebellion that killed every Targaryen, except two.

Daenerys Targaryen:
I'm not my father.

Barristan Selmy:
No, Your Grace. Thank the Gods. But the Mad King gave his enemies the justice he thought they deserved, and each time, it made him feel powerful and right...until the very end.

Daenerys Targaryen:
I will not have the Son of the Harpy executed without a fair trial.

Barristan Selmy:
Your Grace.