The book was written by N.R. Guseva, a famous Indologist and ethnographer, Doctor of Historical Sciences, laureate of the International Prize. Jawaharlal Nehru, author of over 150 scientific papers on the culture and ancient forms of religion of Indians and Slavs. Work in India helped her deeply familiarize herself with Hinduism and reveal in different movements of this religion traces of pagan ideas of the Indo-Europeans, preserved from the time of the deepest antiquity. This book focuses on the comparison of the ancient forms of culture of the Slavs and Aryans, which is illustrated by numerous examples of similarities in language and religion. The roots of this similarity go back thousands of years, in the era of living together in the Arctic of the ancestors of all Indo-Europeans. For a wide range of readers.