National mind - is it, and if it is, how to catch it not only in literature and art, but also in religion and in the sciences. Having subjected the works of Galileo, Pascal, Descartes, Newton, Kant and other philosophers and scientists to aesthetic and philological analysis, he demonstrates the connections of natural science with humanitarian culture and reveals the features of national worldviews. The book is written in the style of the diary of a thinker and a reader, as a confession about the adventures of thought.