Complex sentence: Evald Vassilievich Ilyenkov (1924-1979) was a Marxist author and renowned Soviet philosopher who did important original work on the materialist development of Hegel's dialectics.
Split into simpler sentences: Evald Vassilievich Ilyenkov (1924-1979) was a Marxist author. Renowned Soviet philosopher who did important original work on the materialist development of Hegel's dialectics.