We wanted to fly. We also had such big egos that we felt that we could fly the crates they shipped these things in. We honestly felt that, with things that were wrong, we always had a mental workaround on them.
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
(1987) -- Carl Sagan
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