All Entities Move and Nothing Remains Still

All entities move and nothing remains still.
Heraclitus was an ancient Greek pre-Socratic philosopher from the city of Ephesus, which was then part of the Persian Empire. He exerts a wide influence on Western philosophy, both ancient and modern, through the works of such authors as Plato, Aristotle, the Stoics, Georg Wilhelm Friedrich Hegel, Friedrich Nietzsche, and Martin Heidegger.

All entities move and nothing remains still.

Everything changes and nothing stands still.

Everything flows and nothing stays.

You could not step twice into the same river.