My ideas about time all developed from the realization that if nothing were to change we could not say that time passes. Change is primary, time, if it exists at all, is something we deduce from it.
Julian BarbourWhat really intrigues me is that the totality of all possible Nows of any definite kind has a very special structure. You can think of it as a landscape or country. Each point in the country is a Now.
Julian BarbourIf nothing happened, if nothing changed, time would stop. For time is nothing but change. It is change we see occurring all around us, not time. In fact, time doesn't exist.
Julian Barbour