Dr. Avivah Zornberg says, "Faith requires imagination."
Faith requires imagining an entity that you cannot see with your eye.
In my mind, faith in a God who spoke words and created a world requires as much imagination as faith in bacteria that are too tiny to see but are able to kill you (להבדיל). Developing a personal, complex theology that incorporates ideas from the past requires far more imagination, just as developing new scientific theories is imaginative work that builds on the imagination of others.
Now hold your horses! I understand the difference between science and religion, I promise. But don't try to tell me that successful scientists don't require imagination. Creating new hypotheses to explain our data, and new experiments to test those hypotheses, is among the most imaginative work I know.
Successful scientists are also skeptical of their imagination. I've seen the opposite, and its results -- scientist who fall so in love with their own theories they ignore the contradicting data. The outcome is never good.
My model of good faith shares both these aspects of science: imagination and skepticism. We need imagination to dream of the Creator of worlds. We need imagination to dream of improving this world. But we need skepticism to see when our ideas about the Creator contradict our ideals for Her world. And we need skepticism to see when our ideals contradict the reality of the world God created. Just as a good scientist is not afraid to modify her hypotheses, a person of good faith should not be afraid to modify her faith when she finds her imagination has misled her.