You were safe on a troll. Anyone wanting to mug a troll would have to use a building on a stick.

Nature abhors a lot of things, including vacuums, ships called the Marie Celeste, and the chuck keys for electric drills.

But then science is nothing but a series of questions that lead to more questions.

Vimes stalked gloomily through the crowded streets, feeling like the only pickled onion in a fruit salad.

...it is well known that a vital ingredient of success is not knowing that what you're attempting can't be done.

I would like to die peacefully with Thomas Tallis on my iPod before the disease takes me over and I hope that will not be for quite some time to come, because if I knew that I could die at any time I wanted, then suddenly every day would be as precious as a million pounds, if I knew that I could die, I would live. My life, my death, my choice.

One thing that writers have in common is that they are readers first. They have read lots and lots of stuff, because they're just infested with lots of stuff.