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.
A humble man without learning, but filled with the Holy Spirit, is more powerful than the most nobly-born profound scholar without that inspiration. He who is educated by the Divine Spirit can, in his time, lead others to receive the same Spirit.
- ‘Abdu’l-Baha (From a talk; ‘Paris Talks: Addresses given by ‘Abdu’l-Bahá in Paris in 1911-1912’)