‘Empty Mind’ is the primary goal of most meditation programs.
Once you are able to hold the state of no thought, it becomes possible to focus your mind indefinitely on one point.
You become able to enter higher meditations easily and remain in them.
Buddhists call empty mind meditation Vipassana, or Anapanasati. They devote themselves to years, sometimes an entire lifetime, of dedicated practice to achieve the state where thoughts disappear completely or no longer arise.