I can explain it for you, but I can't understand it for you

You do not really understand something unless you can explain it to your grandmother

The more you explain it, the more I don't understand it.

The older I get, the more I believe in what I can't explain or understand, even more than the things that are explainable and understandable.

It's among the intelligentsia that we often find the glib compulsion to explain everything and to understand nothing.

Don't find fault with what you don't understand