Most species do their own evolving, making it up as they go along, which is the way Nature intended. And this is all very natural and organic and in tune with mysterious cycles of the cosmos, which believes that there's nothing like millions of years of really frustrating trial and error to give a species moral fiber and, in some cases, backbone.

Lord Vetinari lifted an eyebrow with the care of one who, having found a piece of caterpillar in his salad, raises the rest of the lettuce.

If you try to to take my bananas from me, I will reclaim them from your cold dead hands.

If there's one thing that really annoys a god, it's not knowing something.

Look at Satan. Created as an angel, grows up to be the Great Adversary. Hey, if you’re going to go on about genetics, you might as well say the kid will grow up to be an angel. After all, his father was really big in Heaven in the old days. Saying he’ll grow up to be a demon just because his dad became one is like saying a mouse with its tail cut off will give birth to tailless mice. No. Upbringing is everything. Take it from me.

He’sh mad?’ ‘Sort of mad. But mad with lots of money.’ ‘Ah, then he can’t be mad. I’ve been around; if a man hash lotsh of money he’sh just ecshentric.

Any wizard bright enough to survive for five minutes was also bright enough to realize that if there was any power in demonology, then it lay with the demons. Using it for your own purposes would be like trying to beat mice to death with a rattlesnake.