  Ernst Zermelo's axiomatization of set theory (1908) did not exclude `a set
that is a member of itself'. We call a set that is a member of itself `an
individual'. In this article we prove the elimination of Russell's paradox is
equivalent to "For every set S, an individual is a member of S or a set (but
not an individual) is not a member of S". This shows there is place is set
theory for individuals. We give individuals the place they deserve according to
formal logic.
