Sir Isaac Newton may be considered the first pre-Eurasianist thinker. My research of his unpublished manuscripts demonstrates that he maintained the presence of cultural unity of Eurasian space. To prove it, he elaborated so-called “Eurasian dictionaries.” They are symbolic dictionaries translating meaning into symbols and vice versa. As Newton evidently showed, the symbols standing for the most important religious and political notions of people inhabiting Eurasia, were always the same, from ancient times to the Great Migration Era. In my paper written in Russian specially for the fruitful discussion with my Russian colleagues, I demonstrate the role of Sir Newton’s ideas in our correct realising the cultural unity of Eurasia.