I suspect that most of the individuals who have religious faith are content with blind faith. They feel no obligation to understand what they believe. They may even wish not to have their beliefs disturbed by thought. But if God in whom they believe created them with intellectual and rational powers, that imposes upon them the duty to try to understand the creed of their religion. Not to do so is to verge on superstition.
A Second Look in the Rearview Mirror: Further Autobiographical Reflections of a Philosopher at Large (ed. MacMillan Publishing Company, 1992)