I don't know why we are here, but I'm pretty sure that it is not in order to enjoy ourselves. — Ludwig Wittgenstein. Austrian philosopher and logician (1889–1951)
A man will be imprisoned in a room with a door that's unlocked and opens inwards; as long as it does not occur to him to pull rather than push.
If there were a verb meaning "to believe falsely," it would not have any significant first person, present indicative.