In addition to his profound religious experiences derived from severe ascetic practices, based on his studies of religion and philosophy of East and West, old and new, as well as his research by electrophysiological and biophysical experiments, the author elucidates that true religion evolves in accordance with the stage of mankind’s psycho-spiritual growth, sustaining all things and giving life to all beings. The author explains in plain words that religion and science are mutually complementary and that peace for mankind could be realized when religion evolves to the stage of World Religion.