Nikolai Berdyaev, Russian-French philosopher and theologian (d. 1948)

Nikolai Alexandrovich Berdyaev (; Russian: Никола́й Алекса́ндрович Бердя́ев; 18 March [O.S. 6 March] 1874 – 24 March 1948) was a Russian philosopher, theologian, and Christian existentialist who emphasized the existential spiritual significance of human freedom and the human person. Alternative historical spellings of his surname in English include "Berdiaev" and "Berdiaeff", and of his given name "Nicolas" and "Nicholas".