Eight years involved with the nuclear industry have taught me that when nothing can possible go wrong and every avenue has been covered, then is the time to buy a house on the next continent.
Interpretation
The quote humorously suggests that certainty and preparedness can lead to unexpected disasters, indicating the need for caution.
Terry Pratchett humorously implies that when one is overly confident that everything is under control—especially in a field as precarious as the nuclear industry—it's wise to prepare for potential chaos that may arise. The exaggeration of buying a house on another continent suggests that one should always be ready for the unexpected, even when things appear secure.
In practice
During a speech on risk management, this quote illustrates how overconfidence can lead to unexpected outcomes.
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.
In the mountains of truth, you never climb in vain.
Long ago, Sir Isaac Newton gave us three laws of motion, which were the work of genius. But Sir Isaac's talents didn't extend to investing: He lost a bundle in the South Sea Bubble, explaining later, 'I can calculate the movement of the stars, but not the madness of men.' If he had not been traumatized by this loss, Sir Isaac might well have gone on to discover the Fourth Law of Motion: For investors as a whole, returns decrease as motion increases.
That's the way to come to the Word of God. Read it as though it were His love letter to you.
We must sow the seed, not hoard it.
The grateful person fears no court or judge, no sentence or executioner, but what he carries about him in his own breast: and being still the most severe exactor of himself, not only confesses but proclaims his debts.
If you're going to be a good and faithful judge, you have to resign yourself to the fact that you're not always going to like the conclusions you reach. If you like them all the time, you're probably doing something wrong.
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