Who or what to trust?

There is so much we do not know, and so much that we think we know - but don't, and so much that other people think they know - but don't. This makes me very cautious about believing anything that I am told on an intellectual level. I think in many cases trusting our hearts (or "gut feelings") is much more beneficial than relying on our intellect. Even the experts on particular subjects are consistently proven wrong.