1890. The effort of the writer is to show the ancient belief of mankind in the unknown god and that the great Father of all has granted his inspiration to many of very different countries, tribes and races. Contents: Egyptian monotheism; Jews and Egyptians; Arkadian Penitential Psalms; Greek mysteries; Zeus as spiritual god; religion of Socrates and Plato; faith of the Stoics; Stoical writings, Epictetus and Marcus Aurelius; Zoroastrianism; Hinduism; Buddhism; sacred writings of Buddhism; heathen inspiration and the scriptures; conversion of the non-Christian nations.