Wilhelm Bölsche

[2] As a secondary school student, Bölsche wrote essays on natural history for magazines such as "Die Gefiederte Welt" or "Isis".

This circle of friends would visit Erkner, where they sought the tranquility of the Brandenburg landscape near the cosmopolitan city of Berlin.

In 1890 he and Bruno Wille founded the "Freie Volksbühne", which was intended as a workers' theater promoting the naturalist plays of the day.

He also edited the most important cultural history review of the day, "Freie Bühne" (Free Stage) and popularized his free-thinking monism knowledge, based on the thoughts of Charles Darwin and Ernst Haeckel, in dozens of self-edited books and series released by Kosmos-Verlag in Stuttgart collaborating with the Berlin artist Heinrich Harder.

[7][8][circular reference] The couple had three children: Ernst Wilhelm Julius (1898–1899), Karl Erich Bruno (1899–1977) and Johanna Alwine Elisabeth (1900–35).