" I wonder if all the people who talk so glibly of time-traveling have understood what it means: namely, that past and future ages are just as real as the present. Else there would be no places to travel to. And then what keeps us from time-traveling? Only the human mind, the human consciousness, which is bound down to one tiny bit of time, the present moment. But if we could ever get outside the present moment, we would see the world in four dimensions, the fourth being time. We would see ourselves, stretching out in a continuous line from the cradle to the grave…. "

― Fritz Leiber , The Dealings of Daniel Kesserich