Who said "To work without purpose is to waste one's life."?

This quote is attributed to Rhaegar Targaryen.

To work without purpose is to waste one's life. - Rhaegar Targaryen

"To work without purpose is to waste one's life."

Rhaegar Targaryen Work

"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."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."