Found this on another site, makes sense to a degree.

3 types of people

1. Ignorant (like me on many levels)
2. Wise
3. Fools

Ignorance has a cure, and good willed people want to know the truth.

If you are preaching to a fool,
They only hate you for it
Find a goodly soil to plant seeds

If you don't shine the truth in the dark,
People can't see the danger.
If you shine a light, the fools like bugs are attracted too....just ignore their words, keep building the wall, but keep a sword handy just in case. They are fools after all.