"<p>There are no two worlds, only one, showing to our external perception the changing series of symptoms, to our internal cognition the constant essence.<br />In the temporal and changing, it is perception that adjusts us; in the timeless and unchanging, it is imagination.<br />He who immerses himself in the basic layer of himself, the unchanging: no matter how many times he repeats it, no matter how much he knows the unchanging, he still has no perception of it. What he knows there: he does not experience, but imagines; only the unchanging leads the imagination just as the changing series of symptoms leads the perception.<br />Sensory experience is possible only of the variable, solid knowledge only of the constant. There is no sensory experience of the essence, only knowledge based on inner cognition; there is no solid knowledge of the phenomena, only temporary knowledge.<br />If the variable "is", the constant is only an idea; if the constant "is", the variable is only a ghost. "There is eternity" and "there is no eternity", "God is" and "God is not", are equally valid, whether viewed from the constant or from the variable.</p>"