The Constructed Language Hypothesis

[Hermes777]

I tried my hand at a conlang years ago. It is remarkably difficult to escape from the habits of your natural language. I expect any early Ren. conlang would still reflect the natural language(s) of the author. An entirely a priori conlang is much less likely. 

Motives? Perhaps, in context, an attempted synthetic language to bridge the Latin and Greek Churches? More generally, a device to deal with a body of exotic (scientific) information? Experimentalism? A personal folly? Written, spoken or both?

The usual place to start with a conlang is phonology (and so consonant/vowel schemes) - do you want it to sound like Hawaiian or Klingon? (Voynichese looks like it should be pronounceable?) Then you build a core vobaculary. Then you build a grammar. Poor conlangs fail at the grammar and are just an assembly of words.

Conlangs come in many types depending upon the proposed purpose. Without some clue to its purpose, it is hard to know where to start.