Nikolai Vladislavovich Valentinov was a Russian philosopher, journalist and economist. A member of the Russian Social Democratic Workers' Party, he was an exponent of empirio-criticism. He was also known as Nikolai Valentinov-Volski and, later, as... Wikipedia
Born: May 19, 1880, Morshansk, Russia
Died: July 26, 1964 (age 84 years), Paris, France