We should not pretend to understand the world only by the intellect. The judgement of the intellect is only part of the truth.

You shall know the truth, and the truth shall make you mad.

Truth is what works.

We have to live today by what truth we can get today and be ready tomorrow to call it falsehood.

It is not because the truth is too difficult to see that we make mistakes... we make mistakes because the easiest and most comfortable course for us is to seek insight where it accords with our emotions - especially selfish ones.