Certainty Cuts off Growth

The poet Walt Whitman wrote in Leaves of Grass  “Do I contradict myself? Very well, I contradict myself. I am vast; I contain multitudes.”
I always thought this line was an open ended invitation to growth, a path that recognizes new ways of thinking about and doing things to incorporate learning. Whitman’s line runs along in my mind with a quote by Ralph Waldo Emerson’s from his essay Self-Reliance “A foolish consistency is the hobgoblin of little minds, adored by little statesmen and philosophers and divines.”
So I’m impressed when someone says “I used to think this way, but the more I learn, the more I reallize there are many ways to look at something…and I’ve changed my mind about my original position.”
Some people can’t do that. They are stuck with an original position, often formed to protect a life’s narrative in which others are to blame for their shortcomings or ills. Parents get caught in this trap, as do spouses, bosses, children or anyone who is snared in another’s web of certainty.
When we start with ” I know…” instead of ” I believe…”, we shut outself off from new input. Someone who knows needs no more information. I believe people who ‘know’ have a difficult time maintaining friendships, love relationships and an ability to deal with a universe where change is the only constant.
I believe knowing you’re right means you’re stuck.