Having solved all the major mathematical, physical, chemical, biological, sociological, philosophical, etymological, meteorological and psychological… - Douglas Adams

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Having solved all the major mathematical, physical, chemical, biological, sociological, philosophical, etymological, meteorological and psychological problems of the Universe except for his own, three times over, [Marvin] was severely stuck for something to do, and had taken up composing short dolorous ditties of no tone, or indeed tune. The latest one was a lullaby.
Marvin droned,
Now the world has gone to bed,
Darkness won't engulf my head,
I can see in infrared,
How I hate the night.
He paused to gather the artistic and emotional strength to tackle the next verse.
Now I lay me down to sleep,
Try to count electric sheep,
Sweet dream wishes you can keep,
How I hate the night.