Symbiosismus
Symbiosismus est philosophia de mente et loco hominis in natura, ratio Darwiniana, quae linguam agnoscit organismum in cerebro humano habitantem, ubi affirmat linguam esse formam vitae memeticam. Symbiosismus a Schola Lugduno-Batava definitur. Memae sunt significationes (hoc est constructa isofunctionalia neuroanatomica quae cum signis sensu Saussureano congruunt. Significationes vigent, assidue propagantur, linguaeque essentia fiunt. Necessaria memarum proprietas est significationes linguisticas habere naturam copiarum non constructibilem sensu mathematico, et non operantur per vim quae logicae Aristotelianae moderatur, sicut principium medii exclusi. Lugdunensis memae conceptum cum definitione Oxoniensis ut unitas imitationis discrepat, notio morum quae Lugduni Batavorum a vocabulo mema capitur. Fecunditas memarum ut regeneratores et earum fidelitatis regenerationis sunt finitae, magis in contextibus praelinguisticis.

Lingua est symbion mutualisticum, quae in coniunctionem mutuo utilem cum suo hospite humano intrat. Homines linguam propagant, cum lingua universum conceptuale praebet quod cogitationem hospitis humani informat. Lingua habilitatem Darwinianam speciei humanae amplificat, sed singulae  grammaticae et lexicae memarum per linguam conciliatae significationes et configurationes hospiti biologico aut utiles aut inutiles esse possunt. Haec symbiosis vertitur multiplicior quam solum mutualismus simplex, tam per discrepantiam physiologicam inter linguam ut condicio tota et ingenium notionum singularum per linguam significatarum, quam per differentiam oecologicam inter memas ad perpendiculam et per libram transmissis. Symbiotica linguae ratio, a Georgio van Driem proposita, ex schola Lugduno-Batava evolutionis linguae processit, Friderico Kortlandt auctore.

Bibliographia
Kortlandt, Frederik Herman Henri. 1985. A parasitological view of non-constructible sets. In Studia linguistica diachronica et synchronica: Werner Winter sexagenario anno MCMLXXXIII gratis animis ab eius collegiis, amicis discipulisque oblata, ed. Ursula Pieper et Gerhard Stickel, 477–483. Berolini: Mouton de Gruyter.
Kortlandt, Frederik Herman Henri. 1998. Syntax and semantics in the history of Chinese. Journal of Intercultural Studies 5:167–176. PDF.
Kortlandt, Frederik Herman Henri. 2003. The origin and nature of the linguistic parasite. In Language in Time and Space: A Festschrift for Werner Winter on the Occasion of his 80th Birthday, ed. Brigitte Bauer et Georges-Jean Pinault, 241–244. Berlin: Mouton de Gruyter. PDF.
Salverda, Reinier. 1998. Is language a virus? Reflections on the use of biological metaphors in the study of language. In Productivity and Creativity: Studies in General and Descriptive Linguistics in Honor of E. M. Uhlenbeck, ed. Mark Janse et An Verlinden, 191–209. Berlin: Mouton de Gruyter.
Salverda, Reinier. 2003. Letter to the Editor, New Scientist, 1 Februarii; 2380:25.
Wiedenhof, Jeroen Maarten. 1996. Nexus and the birth of syntax. Acta Linguistica Hafniensia 28:139–150. PDF.
van Driem, George. 2001. Languages of the Himalayas: An Ethnolinguistic Handbook of the Greater Himalayan Region: Containing an Introduction to the Symbiotic Theory of Language. 2 vol. Brill. ISBN 9004120629.
van Driem, George. 2003. The Language Organism: The Leiden Theory of Language Evolution. In Proceedings of the XVIIth International Congress of Linguists, Prague, July 24–29, 2003, ed. Jiří Mírovský, Anna Kotěšovcová, et Eva Hajičová. Pragae: Matfyzpress vydavatelství Matematicko-fyzikální fakulty Univerzity Karlovy.
van Driem, George. 2004. Language as organism: A brief introduction to the Leiden theory of language evolution. In Studies on Sino-Tibetan Languages: Papers in Honor of Professor Hwang-cherng Gong on his Seventieth Birthdayed, ed. Ying-chin Lin, Fang-min Hsu, Chun-chih Lee, Jackson T.-S. Sun, Hsiu-Fang Yang, et Dah-ah Ho, 1–9. Language and Linguistics Monograph Series, W-4. Taipeii: Institute of Linguistics. 
van Driem, George. 2005. The language organism: The Leiden theory of language evolution. In Language Acquisition, Change and Emergence: Essays in Evolutionary Linguistics, ed. James W. Minett et William S.-Y. Wang, 331–340. Hongcongi: City University of Hong Kong Press.

Philosophia linguae