Author: P. I︠A︡ Chaadaev
Born: 7 June 1794
Died: 26 April 1856
Bio: Pyotr or Petr Yakovlevich Chaadayev (Russian: Пётр Я́ковлевич Чаада́ев; also spelled Chaadaev, or Čaadajev) was a Russian philosopher. He was one of the Russian Schellingians.