Who said "Death is not an end, but a beginning."?

This quote is attributed to Rhaegar Targaryen.

Death is not an end, but a beginning. - Rhaegar Targaryen

"Death is not an end, but a beginning."

Rhaegar Targaryen Death

"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."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."