One can acquire certainty only by amputating inquiry.
You don't understand anything unless you understand there are at least 3 ways.
Everything is similar if you're willing to look far out of focus.
It would be as useless to perceive how things 'actually look' as it would be to watch the random dots on untuned television screens.
The principal activities of brains are making changes in themselves.
If we understood something just one way, we would not understand it at all.