A Connecticut Yankee in King Arthur's Court, Part 3.

Now it is curious how progressively little frets grow and multiply after they once get a start.

奇怪的是，一旦小小的烦恼开了头，它们就会逐渐增长、越来越多。

the thing that you can't get is the thing that you want, mainly; every one has noticed that.

够不着的东西就是你最想要的东西，这一点人人都注意到过。