Nikolai Alexandrovich Berdyaev (; Russian: ??????´? ??????´??????? ?????´??; March 18 [O.S.
March 6] 1874 – March 24, 1948) was a Russian political and also Christian religious philosopher who emphasized the existential spiritual significance of human freedom and the human person.
Alternate historical spellings of his name in English include "Berdiaev" and "Berdiaeff", and of his given name as "Nicolas" and "Nicholas".