In the teaching of Bahá’u’lláh, it is written: ‘By the Power of the Holy Spirit alone is man able to progress, for the power of man is limited and the Divine Power is boundless.’ The reading of history brings us to the conclusion that all truly great men, the benefactors of the human race, those who have moved men to love the right and hate the wrong and who have caused real progress, all these have been inspired by the force of the Holy Spirit. The Prophets of God have not all graduated in the schools of learned philosophy; indeed they were often men of humble birth, to all appearance ignorant, unknown men of no importance in the eyes of the world; sometimes even lacking the knowledge of reading and writing. That which raised these great ones above men, and by which they were able to become Teachers of the truth, was the power of the Holy Spirit. Their influence on humanity, by virtue of this mighty inspiration, was great and penetrating. The influence of the wisest philosophers, without this Spirit Divine, has been comparatively unimportant, however extensive their learning and deep their scholarship. The unusual intellects, for instance, of Plato, Aristotle, Pliny and Socrates, have not influenced men so greatly that they have been anxious to sacrifice their lives for their teachings; whilst some of those simple men so moved humanity that thousands of men have become willing martyrs to uphold their words; for these words were inspired by the Divine Spirit of God! The prophets of Judah and Israel, Elijah, Jeremiah, Isaiah and Ezekiel, were humble men, as were also the apostles of Jesus Christ. Peter, the chief of the apostles, used to divide the proceeds of his fishing into seven parts, and when, having taken one part for each day’s use, he arrived at the seventh portion, he knew it was the Sabbath day. Consider this! and then think of his future position; to what glory he attained because the Holy Spirit wrought great works through him. We understand that the Holy Spirit is the energizing factor in the life of man. Whosoever receives this power is able to influence all with whom he comes into contact. The greatest philosophers without this Spirit are powerless, their souls lifeless, their hearts dead! Unless the Holy Spirit breathes into their souls, they can do no good work. No system of philosophy has ever been able to change the manners and customs of a people for the better. Learned philosophers, unenlightened by the Divine Spirit, have often been men of inferior morality; they have not proclaimed in their actions the reality of their beautiful phrases. The difference between spiritual philosophers and others is shown by their lives. The Spiritual Teacher shows His belief in His own teaching, by Himself being what He recommends to others.