No text, but a visual code

[BessAgritianin]

As Hermes says, the script is a notation system arranged like a linguistic text. I believe that this is so because it is about representing the astral influence on the herbs and that requires finding an appropriate means of communication. With the use of visual symbols and some numbers the author or authors try to use a scientific language, which in the mentality of the time is equivalent to saying a magical language.

  The Voynich is above all an astrological book. It is not a herbal nor a cosmological book. It is an attempt to unite both things.

Antonio, it is well good with text and symbols and astrology. 
To exclude the text means to make it like brainless robot.
The herbs are explained with their usage. Otherwise why are the letters around them?
The Zodiac is also explained.
The pharmacy - too.
Merely the wise man knew much more, than we do today... In his days maybe he was merely a healer, but for us he is a Magician, because of the bunch of knowledge he possessed.