As a form of human action, mystical exposition constitutes an aspect o
f the subject matter of behavior science. Presented for analysis, ther
efore, is a mystical conceptualization of human experience in which ve
xing problems of language, logic, truth, reality, time, and utility ar
e confronted. Commonalities among the solutions achieved by mystics an
d contemporary physicists to these problems are discussed, culminating
in the insurmountable problem for both of the unity of opposites. The
value of this exposition for behavior analysts is demonstrated in ind
ications that behavior science is headed down this same path and may t
hereby expect to ponder the same questions as are occupying mystics an
d physicists.