Nothing Explored

Sometimes I wonder if it is physically possible to think of nothing. What exactly is nothing? Is it darkness? But that would be something. If I thought of darkness I would think of caves and then wilderness and then Bear Grylls. No, it can't be darkness. Trying to think of nothing is pretty damn difficult. There it is! My mistake. In trying to think of nothing, I am thinking of nothing. I am trying to imagine nothing. My task is to generate no thoughts at all. This is going to be much more difficult.