All things are subject to interpretation; whichever interpretation prevails at a given time is a function of power and not the truth.

Often attributed to Nietzsche especially on social media, but no citation is ever given. Dr Zuleyka Zevallos explains there is a similar quote on "Notes" (1888), translated in The Portable Nietzsche (edited by Walter Kaufmann) but it doesn't mentions power: socialscienceinsights.com