Light illumines only because we have eyes. Sound amplifies only because we have ears. In truth, light and sound are no more different than red and green. They are merely distances on a spectrum seen as different only because we have a body that divides them through the sense perceptions. Free yourself from these and you will free yourself from the body. Free yourself from the body and you will become one with the cosmos. Become one with the cosmos and you will inhale with the sunrise and exhale with the sunset. Such will be the passage of time.