From Robert A. Heinlein's "Blowups Happen", a short story
	found in his book _The Past Through Tomorrow_:

"... the best all-around man for psychoses non-lesional and situational.
 That would be Lentz. [...] He covers the whole field of environmental
adjustment. He's the man that correlated the theory of optimum tonicity
with the relaxation technique that Korzybski had developed empirically.
[...] his work in symbology - theory of abstraction and calculus of
statement [...] its applications to engineering and mathematical physics.

  [...] I can't help but be surprised that one man should attain eminence
in two such widely differing fields as psychology and mathematics. [...]
"Same subject", [Lentz] answered. [...] both mathematical physics and
psychology are branches of the same subject, symbology. [...] Man lives
in a world of ideas.  Any phenomenon is so complex that he cannot possibly
grasp the whole of it. He abstracts certain characteristics of a given
phenomenon as an idea, then represents that idea as a symbol, be it a word
or a mathematical sign. Human reaction is almost entirely reaction to
symbols, and only negligibly to phenomena. As a matter of fact [...] it
can be demonstrated that the human mind can think only in terms of symbols.
When we think, we let symbols operate on other symbols in certain, set
fashions - rules of logic, or rules of mathematics. If the symbols have
been abstracted so that they are structurally similar to the phenomena
they stand for, and if the symbol operations are similar in structure
and order to the operations of phenomena in the real world, we think
sanely. If our logic-mathematics, or our word-symbols, have been poorly
chosen, we think not-sanely.

  In mathematical physics you are concerned with making your symbology
fit physical phenomena. In psychiatry I am concerned with precisely the
same thing, except that I am more immediately concerned with the man who
does the thinking than with the phenomena he is thinking about. But the
same subject, always the same subject."