Alexander Moiseyevich Piatigorsky was a Soviet dissident, Russian philosopher, scholar of Indian philosophy and culture, historian, philologist, semiotician, writer. Well-versed in the study of language, he knew Sanskrit, Tamil, Pali, Tibetan, German, Russian, French, Italian and English. In an obituary appearing in the English-language newspaper The Guardian, he was cited as "a man who was widely considered to be one of the more significant thinkers of the age and Russia's greatest philosopher." On Russian television stations he was mourned as "the greatest Russian philosopher."

Juri Lotman was a prominent Russian-Estonian literary scholar, semiotician, and historian of Russian culture, who worked at the University of Tartu. He was elected a member of the British Academy (1977), Norwegian Academy of Science and Letters (1987), Royal Swedish Academy of Sciences (1989) and Estonian Academy of Sciences (1990). He was a founder of the Tartu–Moscow Semiotic School. The number of his printed works exceeds 800 titles. His archive which includes his correspondence with a number of Russian and Western intellectuals, is immense.