Who said "Patience is not passive; it is concentrated strength."?

This quote is attributed to Heraclitus.

Patience is not passive; it is concentrated strength. - Heraclitus

"Patience is not passive; it is concentrated strength."

Heraclitus Patience

Philosopher Ancient Greek 540–480

"Change is the only constant in life."

"No one steps in the same river twice."

"The path up and down are one and the same."

"Conflict is the father of all things."

"Patience is a virtue I'm still learning."

"I may be a redhead, but I'm not a hothead."

"Patience is a virtue."

"Patience is a virtue I never learned."