The law of spectral return:

"The light of those inconceivably distant stars in the Milky Way takes seventy thousand years to reach the earth; if there were a telescope powerful enough to bring the surface of one into view, the events we could observe, however much they appeared to be taking place before our eyes, would be things that had already been past for seventy thousand years.  The idea that shook him with its terrifying simplicity was that in the infinite expanse of the universe every event that had ever occurred must be preserved somewhere, as an image embalmed in light.  'Therefore,' he reasoned, 'there must exist the possibility—even if it is beyond the power of man—of bringing back the past?'"
—Gustav Meyrink, The Green Face

"Take life less seriously and dreams more so, then things will improve, then the dream can become your leader instead of, as now, going around as a garish clown in the motley shreds of our daytime memories."
—Gustav Meyrink, The White Dominican

"The strange magic emanating from children's toys . . . often exercise[s] a greater healing power over a heart wearied by life than the most sublime work of art."
—Gustav Meyrink, The Green Face

"The whole of life consists of nothing but questions which have taken on physical form and which bear the seed of their answer within them, and of answers which are pregnant with questions.  A man who sees anything else in it is a fool."
—Gustav Meyrink, The Golem

"Sometimes you can fan the flame of your thoughts so vigorously that they give off a spray of sparks that fly to the brain of the person standing next to you."
—Gustav Meyrink, The Golem

From Prof. Oddfellow's sketchbook:

"Behind the dark masonry of the forehead there must be enigmas sleeping such as Amsterdam had never imagined in its wildest dreams.”
—Gustav Meyrink, The Green Face

Each single action here on earth
Accords with nature's rule;
"I am the author of this act"—
Thus speaks the self-deceiving fool.
—Gustav Meyrink, The White Dominican

"I believe that the old mysteries conceal much more dangerous things than knowledge of phases of the moon and eclipses of the sun, things that really had to be concealed—but which do not need to be concealed nowadays because the foolish throng would not believe them anyway, only laugh at them—things that obey the same laws of harmony as the stars and which are therefore similar to them."
—Gustav Meyrink, The Green Face

"Something that appears unusual today might be an everyday event tomorrow."
—Gustav Meyrink, The White Dominican

"Memories that come back to life are like ghosts; they emerge, as if from a tiny point, then swell until they suddenly take on a spatial presence of greater beauty and immediacy than they ever had before."
—Gustav Meyrink, Walpurgisnacht

"The Fall did not begin with eating the apple, that is base superstition.  It was hanging pictures in houses that did it!  Scarcely has the plasterer made the wall sheer and smooth than the Devil appears in the guise of an 'artist' and paints you a 'hole' in it with a view into the distance.  From there it's only one step to the bottomless pit where you're hanging in full fish and soup on the dining-room wall yourself next to Isidor the Handsome or some other crowned idiot with a pear-shaped head and a Cro-Magnon jaw, watching yourself eat."
—Gustav Meyrink, The Green Face

"Strange how colourful life can be if you take the trouble to look at it from close to and turn your back on the so-called important things, which only bring vexation and suffering."
—Gustav Meyrink, The Green Face

"With all the mad things destiny leaves lying around, it's a surprise your head doesn't sometimes explode, or something like that!"
—Gustav Meyrink, The Green Face