René_Descartes
J._R._R._Tolkien
Gottfried_Wilhelm_von_Leibniz
Esperanto
George_Orwell
Lev_Tolstoj
Þórbergur_Þórðarson
Tilbúið_tungumál
Hergé
Frumindóevrópska
Václav_Havel
George_Soros
Novial
Volapük
Ido
Frank_Herbert
Voynich-handritið
Lingua_Franca_Nova
Nýlenska
Frumnorræna
John_Wilkins
Stofnenska
Johann_Martin_Schleyer
Alfred_Hermann_Fried
Sindarin
Blisskerfið
Carl_Wilhelm_von_Sydow
Interlingue
Antoni_Grabowski
Interlingua
Edgar_de_Wahl
Glosa
Ursula_K._Le_Guin
Lancelot_Hogben
Interlingue_bókmenntir
Interglossa
Alphonse_Matejka