Chzhevskii Dmitrii was an logician and ethicist involved in the history of philosophy, the philosophy of history and culture. As a logician he developed a system of "forms of phenomena of universality". Besides the traditional "concept" he included also the "representative", the "emblem" and the "symbol" among the basic forms of logic. Man as a separate personality is ontologically established and therefore appears as a "symbol" of a higher world of values.