Since religion offers a complete set of answers to the problems of purpose, morality, origins, or science, it discourages exploration of those areas by suppressing curiosity, denies its followers a broader perspective, and prevents social, moral and scientific progress.
Professor at the Leningrad Mining Institute, 1935. Director of the Geological Institute, 1943-1947. Chairman of the Palaeontological Society,
Chief editor of geological maps of several regions of the USSR.