In 1905, he and his wife visited the Russian anarchist Peter Kropotkin on the island of Jersey, from whose book Mutual Aid he was very impressed.

He has also contributed to Volksrecht, the Outpost, Free Youth, The Revolutionary, The Fighter, La Vie Ouvrière and other French syndicalist newspapers.

In the same year he and Willi Munzenberg accompanied a food transport of the International Workers Aid (IAH) to the hungry areas of the RSFSR.

She took a stand in favor of abortion for medical, economic and social reasons, demanded child benefits, crèches, maternity leave and the funding of contraceptives by the health insurance company.

After a lecture in 1936, the government council of the canton of Solothurn imposed a ban on public speaking, which was finally upheld by the federal court after an objection.