I've noticed that the more scientifically educated a person is, the more likely they will harbor a quiet heresy. This is a strongly held belief that goes against the grain of their peers, something not in the accepted cannon of their friends and colleagues. Often the person finds it difficult to fully justify their own belief. It may or may not be believed by others outside their circle, that doesn't matter. What is important is that this view is not held by people they respect and admire. It's become almost a game for me to uncover a person's heresy because I've found that this unconventional view — held with much effort against the tide of their peer's views — tells me more about them than does the bulk of their well-thought out, well-reasoned, and well argued conventional views. The more unexpected the belief is, the more I like them.