  Recently a phenomenological relationship for the observed cosmological
constant has been discussed by Motl and Carroll in the context of treating the
cosmological constant as a $2\times 2$ matrix but no specific realization of
the idea was provided. We realize a cosmological constant seesaw mechanism in
the context of quantum cosmology. The main observation used is that a positive
cosmological constant plays the role of a $Mass^2$ term in the Wheeler DeWitt
(WDW) equation. Modifying the WDW equation to include a coupling between two
universes, one of which has planck scale vacuum energy and another which has
vacuum energy at the supersymmetry breaking scale before mixing, we obtain the
relation $\lambda = (10TeV)^8/M_{Pl}^4$ in a similar manner to the usual seesaw
mechanism. We discuss how the picture fits in with our current understanding of
string/M-theory cosmologies. In particular we discuss how these results might
be extended in the context of exact wave functions of the universe derived from
certain string models.
