Excerpt from Signs and Symbols:

"In these very rare cases the patient imagines that everything happening
around him is a veiled reference to his personality and existence. He
excludes real people from the conspiracy - because he considers himself to
be so much more intelligent than other men. Phenomenal nature shadows him
wherever he goes. Clouds in the staring sky transmit to one another, by
means of slow signs, incredibly detailed information regarding him. His
inmost thoughts are discussed at nightfall, in manual alphabet, by darkly
gesticulating trees. Pebbles or stains or sun flecks form patterns
representing in some awful way messages which he must intercept.
Everything is a cipher and of everything he is the theme. Some of the
spies are detached observers, such are glass surfaces and still pools;
others, such as coats in store windows, are prejudiced witnesses, lynchers
at heart; others again (running water, storms) are hysterical to the point
of insanity, have a distorted opinion of him and grotesquely misinterpret
his actions. He must be always on his guard and devote every minute and
module of life to the decoding of the undulation of things. The very air
he exhales is indexed and filed away. If only the interest he provokes
were limited to his immediate surroundings - but alas it is not! With
distance the to rents of wild scandal increase in volume and volubility.
The silhouettes of his blood corpuscles, magnified a million times, flit
over vast plains; and still farther, great mountains of unbearable
solidity and height sum up in terms of granite and groaning firs the
ultimate truth of his being."