"Bohdan Oleksandrovych Kistyakivsky (Ukrainian: Богдан Олександрович Кістяківський; 16 November 1869 – 16 April 1920) was a Ukrainian philosopher, jurist, and sociologist. He reached prominence with his Gesellschaft und Einzelwesen (Society and Individuals) published in Berlin in 1899. Philosophically he defended transcendental idealism. In 1902 he contributed to Problems of Idealism (Problemy Idealizma), edited by Pavel Novgorodtsev. In 1909 he contributed the essay "In Defense of Law" to the anthology Vekhi (Landmarks)." - (en.wikipedia.org 14.09.2023)