STUDENT: What is science?
PROFESOR: Looking for a black cat in a dark room.
STUDENT: What is philosophy?
PROFESOR: Looking for a black cat in a dark room and there is no cat.
STUDENT: What is psychotherapy?
PROFESOR: Looking for a black cat in a dark room where there is no cat and finding it.
M. T. Singer, J. Lalich, "Crazy" Therapies. What are they? Do they work?
Jossey-Bass Publishers, San Francisco 1996.
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