Almost anything can be seen as a lie or the truth ' from a certain point of view' as Obi Wan would say. But then he was a lie as he was never real.... or was he a lie? His 'character' did speak some truths......hmmmmm. There are, however, certain hard truths and knowings such as the need to eat, sleep, toilet etc if we want to live.

But to make it a little easier, I think most of nature is true.
Everything else should be treated with a healthy skepticism.
As for intelligence, well, I think we can only grow that by seeing things as they are from our own perspective and working on improvement.

As for your statement though, everyones intelligence and judgement is probably above average because we are treated as though we have none, so its only up from there!