Edgar de Wahl
At the turn of the century, de Wahl's began to publish articles on linguistics in specialized publications, as well as writing in various Tallinn newspapers and magazines. Since 1898, de Wahl had been a member of the Estonian Literature Society (German: Ehstländische Literärische Gesellschaft), a German-language association that regularly organised presentations by and for its members. Under the pseudonym Julian Prorók, he published a booklet Ketzereien: Keimzellen einer Philosophie (Heresies: Gametes of a Philosophy) in 1906 about his vision of global developments.