[When a religious couple wrote to Sagan about fulfilled prophecies, he wrote back in May 1996:]
If ‘fulfilled prophecy’ is your criterion, why do you not believe in materialistic science, which has an unparalleled record of fulfilled prophecy? Consider, for example, eclipses.
I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be.
If non-linear leaps in intelligence and ability are possible, why haven't these effects been observed in our schools? I believe the answer lies in the profound inertia of human thought: when an entire society believes something is impossible, it suppresses, by its very way of life, the evidence that would contradict that belief.
I was a terrible believer in things,but I was also a terrible nonbeliever in things. I was as searching as I was skeptical. I didn't know where to put my faith,or if there was such a place,or even what the word faith meant, in all of it's complexity. Everything seemed to be possibly potent and possibly fake.