Everyone recognizes to some extent the type that each is draw to and they intuitively fee each others polarity, mentally and physically. Such types naturally gravitate to and recognize each other, so that out of any hundred people, ninety-nine might have no mental or sex appeal for each other while the hundredth would. All humans should seek the type which corresponds to their own electric wave length. When types so find each other, they will be as perfectly balanced as sodium and chlorine, and the union should be enduring.
It is a common saying that people should marry their opposites. Nothing could be more contrary to universal law than this statement. Everywhere in Nature, like attracts like. This is fundamental. Opposites repel each other. Opposites in temperament and physical patterns invite discord, infidelity and mutual degradation. Matrimonial mismating unbalances the blood stream just as certainly as promiscuous mismating unbalances it.
(Walter Russell, The Message of the Divine Iliad, Vol. II, p. 167