Who said "The only true power is the power to change oneself."?

This quote is attributed to Rubén Darío.

The only true power is the power to change oneself. - Rubén Darío

"The only true power is the power to change oneself."

Rubén Darío Power

Poet Nicaraguan 1867–1916

"I am my own road"

"I seek the divine in all things"

"The poet is a light and a flame"

"To be a poet is to possess wings"

"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."