A dog is "der Hund"; a woman is "die Frau"; a horse is "das Pferd"; now you put that dog in the genitive case, and is he the same dog he was before? No, sir; he is "des Hundes"; put him in the dative case and what is he? Why, he is "dem Hund." Now you snatch him into the accusative case and how is it with him? Why, he is "den Hunden." But suppose he happens to be twins and you have to pluralize him- what then? Why, they'll swat that twin dog around through the 4 cases until he'll think he's an entire international dog-show all in is own person. I don't like dogs, but I wouldn't treat a dog like that- I wouldn't even treat a borrowed dog that way. Well, it's just the same with a cat. They start her in at the nominative singular in good health and fair to look upon, and they sweat her through all the 4 cases and the 16 the's and when she limps out through the accusative plural you wouldn't recognize her for the same being. Yes, sir, once the German language gets hold of a cat, it's goodbye cat. That's about the amount of it.
- Mark Twain's Notebook
The Germans have an inhuman way of cutting up their verbs. Now a verb has a hard time enough of it in this world when it's all together. It's downright inhuman to split it up. But that's just what those Germans do. They take part of a verb and put it down here, like a stake, and they take the other part of it and put it away over yonder like another stake, and between these two limits they just shovel in German.
- Mark Twain's Speeches, "Disappearance of Literature"
Whenever the literary German dives into a sentence, that is the last you are going to see of him till he emerges on the other side of his Atlantic with his verb in his mouth.
- A Connecticut Yankee in King Arthur's Court