Spence isn't simply championing curiosity over dogma—he's describing two opposite *postures* toward knowledge itself. A mind opened by wonder remains actively engaged, perpetually asking "what else?", while a closed mind mistakes certainty for completion and stops listening. The real sting appears when we notice how belief can masquerade as wisdom: a person may feel intellectually proud of their convictions while actually having surrendered the harder work of ongoing inquiry. Watch how this plays out in any serious argument—the person still asking questions often learns something, while the person certain of their rightness goes home unchanged.