It has been well said of him that he never became either a pedant or a doctrinaire.
It is the hideous figure of the doctrinaire which Erasmus is thinking of.
To these, as a "forward" party, the doctrinaire theorists have allied themselves.
If his mind did not naturally work that way he would not be a Doctrinaire.
The Doctrinaire can never realize the fatal nature of the "too-much."