If it quacks really loudly it is a hen.
Those plants of whose greenness withered we make herb tea for the sick serve but a humble use, and are most employed by quacks.
Like all quacks they gather a crowd of slaves, children, women and idlers.
This is the standard approach of cranks and quacks of all descriptions.
Of the followers of Paracelsus some became mere mystical quacks and impostors.