Wisdom comes from experience. Experience is often a result of lack of wisdom.
Interpretation
Wisdom is gained through experiences, which sometimes stem from unwise choices.
This quote by Terry Pratchett highlights the paradoxical relationship between wisdom and experience. It suggests that while wisdom typically arises from lived experiences, those experiences can also emerge from mistakes or a lack of understanding, indicating that the journey to wisdom often involves trial and error.
In practice
This quote could be used in a motivational speech about learning from failures.
And then Jack chopped down what was the world's last beanstalk, adding murder and ecological terrorism to the theft, enticement, and trespass charges already mentioned, and all the giant's children didn't have a daddy anymore. But he got away with it and lived happily ever after, without so much as a guilty twinge about what he had done...which proves that you can be excused for just about anything if you are a hero, because no one asks inconvenient questions.
They've got something they do it with, I think it's called a mocracy, and it means everyone in the whole country can say who the new Tyrant is. One man ... one vet. ... Everyone has ... the vet. Except for women, of course. And children. And criminals. And slaves. And stupid people. And people of foreign extraction. And people disapproved of for, er, various reasons. And lots of other people. But everyone apart from them. It's a very enlightened civilization.
Geography is just physics slowed down, with a couple of trees stuck in it.
You can't trample infidels when you're a tortoise. I mean, all you could do is give them a meaningful look.
Any fool could be a witch with a runic knife, but it took skill to be one with an apple corer.
People look down on stuff like geography and meteorology, and not only because they're standing on one and being soaked by the other. They don't look quite like real science. But geography is only physics slowed down and with a few trees stuck on it, and meteorology is full of excitingly fashionable chaos and complexity. And summer isn't a time. It's a place as well. Summer is a moving creature and likes to go south for the winter.
Just knowing you don't have the answers is a recipe for humility, openness, acceptance, forgiveness, and an eagerness to learn - and those are all good things.
In my entire life, any time I've ever lost something, I've gotten something even better going around the next corner. It's like one door closes and another door opens. As long as I can walk through the produce section in every grocery store in this country and eat the grapes that they're going to throw away, I know I can be fine.
Whatever humans have learned had to be learned as a consequence only of trial and error experience. Humans have learned only through mistakes.
It's not necessary to tell all you know. It's not ladylike -- in the second place, folks don't like to have someone around knowin' more than they do. It aggravates them. Your not gonna change any of them by talkin' right, they've got to want to learn themselves, and when they don't want to learn there's nothing you can do but keep your mouth shut or talk their language.
You might as well answer the door, my child, the truth is furiously knocking.
People are best convinced by things they themselves discover.
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