In the country of the blind, the one-eyed king can still goof up.
Ignorance once dispelled is difficult to reestablish.
The modern child will answer you back before you've said anything.
As the farmer said, "I'm not greedy, all I want is the land next to mine.
The machinery of government is a vast series of interlocking hierarchies riddled through and through with incompetence.
Don't worry about middle age: you'll outgrow it.