Who said "To be still is not to be weak; it is to be centered."?

This quote is attributed to The Ancient One.

To be still is not to be weak; it is to be centered. - The Ancient One

"To be still is not to be weak; it is to be centered."

The Ancient One Strength

"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."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."