It's good when people surprise you with their wisdom and insight. It'd 'appen be good to bottle it but then you'd lose something of the joy of the unexpected. I know a few wise old folk - one in particular whose had several regenerations and hence has an advantage in the old pearls of wisdom stakes.

But it's the young uns who sneak up on you and make you stop and think 'why didn't I spot that?' that cause you to wonder and help you realise you really don't know it all ..... nor would I want to!