About a problem of mentality of Russian culture: development by spurts

In this article author has longstanding researches about problems of cultural mentality of Russia and old Russia. Also researches about dominant traits of this great culture. These researches and also facts of Russian history leads author to main principles of evolution that took place in Russian culture. These principles are: evolution consists of several leaps. Author found about 5 leaps like this. We can talk about leap in X-XI centuries, XIV-XV centuries, first half of XIX century, last part of XIX and first part of XX century, 50-60 years of XX century. This article tells about reasons and preconditions of these leaps, characteristics of these leaps, correlation of these leaps and meaning of each leap for Russian culture.