Who said "Death is not the end. It is merely a transition."?

This quote is attributed to The Ancient One.

Death is not the end. It is merely a transition. - The Ancient One

"Death is not the end. It is merely a transition."

The Ancient One Death

"The universe is not only queerer than we suppose, but queerer than we can suppose."

"Time is the most precious resource in existence. Use it wisely."

"Fear is the mind-killer. It clouds judgment and prevents growth."

"Power is not measured by what you can destroy, but by what you can create."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."