  We construct a Left-Right symmetric model in which the number of generation
is related to Grassmann variables. We introduce two sets of complex Grassmann
variables ($\theta^1_q$,$\theta^2_q$), ($\theta^1_l$, $\theta ^2_l$) and
associate each variable with left- and right-handed quark and lepton fields,
respectively. Expanding quark and lepton fields in powers of the Grassmann
variables, we find that there are exactly three generations of quarks and
leptons. Integrating out the Grassmann variables, we obtain phenomenologically
acceptable fermion mass matrices.
