sense of vacancy, for I presume she was pretty empty when she had
lived by herself for a fortnight. Then _he_ appeared, and by and by
the vacancy was filled up. By comparison the absent one seemed to
fade out, and for the simple reason that he was at a distance--you
know the law about the square of the distance? But when they felt
their passions stirring, then came fear--of themselves, of their
consciences, of him. For protection they played brother and
sister. And the more their feelings smacked of the flesh, the more
they tried to make their relationship appear spiritual.

ADOLPH. Brother and sister? How could you know that?

GUSTAV. I guessed it. Children are in the habit of playing papa
and mamma, but when they grow up they play brother and sister--in
order to hide what should be hidden!--And then they took the vow
of chastity--and then they played hide-and-seek--until they got
in a dark corner where they were sure of not being seen by
anybody. [With mock severity] But they felt that there was _one_
whose eye reached them in the darkness--and they grew frightened--
and their fright raised the spectre of the absent one--his figure
began to assume immense proportions--it became metamorphosed:
turned into a nightmare that disturbed their amorous slumbers; a
creditor who knocked at all doors. Then they saw his black hand
between their own as these sneaked toward each other across the
table; and they heard his grating voice through that stillness of
the night that should have been broken only by the beating of
their own pulses. He did not prevent them from possessing each
other but he spoiled their happiness. And when they became aware
of his invisible interference with their happiness; when they took
flight at last--a vain flight from the memories that pursued them,