 S. N. Trubetskoy's brother, Evgenii Nikolaevitch (1863–1920), was also a philosopher and a Professor at Moscow University, who largely shared S. N. Trubetskoy's beliefs.Evgenii Trubetskoy died of typhus in the Crimea while he was trying to emigrate.Working in the same field as Solovyov, Trubetskoy sought to establish a philosophic foundation for an Orthodox Christian worldview, which would be equally rooted in faith and reason.