  New theory of neutrino masses and mixing is introduced. This theory is based
on a simple S_3 symmetric democratic neutrino mass matrix, and predicts the
neutrino mass spectrum of normal ordering. Taking into account the matter
effect and proper averaging of the oscillations, this theory agrees with the
variety of atmospheric, solar and accelerator neutrino data. Moreover, the
absolute scale of the neutrino masses m of 0.03 eV is determined in this
theory, using the atmospheric neutrino oscillation data. In case of tiny
perturbations in the democratic mass matrix only one this scale parameter m
allows to explain the mentioned above neutrino results, and the theory has huge
predictive power.
