Who said "The only power worth having is power over oneself."?

This quote is attributed to Pickering Edward.

The only power worth having is power over oneself. - Pickering Edward

"The only power worth having is power over oneself."

Pickering Edward Power

Astronomer American 1846–1919

"The greatest glory in living lies not in never falling, but in rising every time we fall."

"Life is what happens when you're busy making other plans."

"Love all, trust a few, do wrong to none."

"The only true wisdom is in knowing you know nothing."

"Power without control is just destruction."

"Power is not about control, it's about influence"

"The world doesn't need me to be the hero. It just needs me to be dangerous."

"The claws come out when I need them to."