The only reason I fail to see its practical use is that how do you know which letters in love and hate to use? If it was like a phrase with each word beginning with the letter, such as my conception:

Lonely
Vegans
Hoard
Apples

Then it'd make perfect sense and I'd be like, "Wey hey! Fantastic."

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The man who comes back through the Door in the Wall will never be quite the same as the man who went out.