All right, then. If what you say is true, then there might likely be some motionless object. Is anything in the universe motionless? Can you point to any single object and say with certainty, "This object is motionless in space. This object is stationary within the fixed, absolute frame of reference"?
And if what you say is true, and there are things that are moving and at least one thing that isn't, how can you tell which is which?