Who said "I learned too late that some battles cannot be won."?

This quote is attributed to Rhaegar Targaryen.

I learned too late that some battles cannot be won. - Rhaegar Targaryen

"I learned too late that some battles cannot be won."

Rhaegar Targaryen Wisdom

"The dragon has three heads."

"I have a duty to my realm and to the future."

"Music is the voice of the soul."

"Love is the most powerful force in the world."

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."