Conlang

Conlangs are planned or constructed languages, as opposed to natural languages.

The Art of Language Invention: From Horse-Lords to Dark Elves to Sand Worms, the Words Behind World-Building
In the Land of Invented Languages: Esperanto Rock Stars, Klingon Poets, Loglan Lovers, and the Mad Dreamers Who Tried to Build a Perfect Language
The Conlanger's Lexipedia
The Language Construction Kit
From Elvish to Klingon: Exploring Invented Languages
Advanced Language Construction
The Goblin Emperor (The Chronicles of Osreth, #1)
Toki Pona: The Language of Good
Esperanto
The Languages of Tolkien's Middle-Earth
The Klingon Dictionary
Langmaker: Celebrating Conlangs
China Construction Kit
Bridge of Words: Esperanto and the Dream of a Universal Language
Star in a Night Sky: An Anthology of Esperanto Literature
If English is a thick novel, then Toki Pona is a haiku.
jan Sonja

In fact, the whole point of Toki Pona is to meditate about what things mean to you personally, paying attention to the unique context around them, and to construct your own phrases using the building blocks provided by Toki Pona.
Sonja Lang, Toki Pona Dictionary

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