They were small, brightly coloured, happy little creatures who secreted some of the nastiest toxins in the world, which is why the job of looking after the large vivarium where they happily passed their days was given to first-year students, on the basis that if they got things wrong there wouldn't be too much education wasted.
Interpretation
The quote suggests that some seemingly harmless or joyful things can have hidden dangers, highlighting the importance of caution and responsibility.
In this quote, Terry Pratchett uses humor to convey a profound lesson about the juxtaposition of appearance and reality. The 'happy little creatures' may appear delightful and harmless, yet they possess potent toxins that could be dangerous. This serves as a reminder that not everything that seems innocent is without its risks, and that responsibility should be taken seriously, especially in educational contexts where mistakes can be costly but also potentially enlightening for students.
In practice
In a speech about recognizing risks in seemingly benign tasks.
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.
The most savory grape, the one that produces the wines with best texture and aroma, the sweetest and most generous, doesn't grow in rich soil but in stony land; the plant, with a mother's obstinacy, overcomes obstacles to thrust its roots deep into the ground and take advantage of every drop of water. That, my grandmother explained to me, is how flavors are concentrated in the grape.
The ego wants to want more than it wants to have.
The state of self-realization, as we call it, is not attaining something new or reaching some goal which is far away, but simply being that which you always are and which you always have been.
When I am with others, they are my teachers. I can select their good points and follow them, and select their bad points and avoid them.
It took me quite a long time to develop a voice, and now that I have it, I am not going to be silent.
It may arrive in the instant when we are doing something mundane, like putting our front-door key in the lock; it may lie hidden in the quiet that follows the lunch hour or in the thousand and one things that all seem the same to us.
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