Faith gives men zest to do their duty. It inspires them to work with passionate zeal. It gives them steadfast courage to fight heroically against obstacles. It inspires them not to slack their will, till they win their objective and enthuses them to stake their lives in the struggle to fulfil their mission in life. Superstition clouds reasons and it abdicates.
Faith does then sink into credulity.
Fantasies born of overwrought imagination are taken as spiritual visions. Myths and fables win belief. Vague theories are valued higher than hard realities. Credulous faith degenerates into morbid mysticism and mysticism in its downward trend degenerates into charlatanism of table-rapping, spirit conjuring and spiritualistic seances. When doubt does assail me, lead me, Ahura Mazda, on the proper path to resume research, that inquiry may end in certainty.