The pre-Socratic Greek philosopher Parmenides taught that the only things that are real are things which never change... and the pre-Socratic Greek philosopher Heraclitus taught that everything changes. If you superimpose their two views, you get this result: Nothing is real.
Philip K. DickI think that, like in my writing, reality is always a soap bubble, Silly Putty thing anyway. In the universe people are in, people put their hands through the walls, and it turns out they're living in another century entirely. I often have the feeling โ and it does show up in my books โ that this is all just a stage.
Philip K. DickWhat a tragic realm this is, he reflected. Those down here are prisoners, and the ultimate tragedy is that they don't know it; they think they are free because they have never been free, and do not understand what it means.
Philip K. Dick