L. Wittgenstein is one of the greatest philosophers of the contemporary
philosophy. The influence of his later philosophy on the formation of ideas of
"continental" philosophy is especially notable. Wittgenstein's philosophy can
be divided into two periods: "early" and "later" Wittgenstein. The main work
of the early period is "Logico-Philosophical Tractatus" [Вітгенштайн Л.
Tractatus Logico-Philosophicus; Філософські дослідження / Л. Вітген-
штайн ; [пер. з нім. Є. Попович]. – К. : Основи, 1995]. During the entire
period from 1911 to the end of the war, Wittgenstein was engaged in original
researches in the field of logic.