Matias Oleksanteri Kastren is a fascinating biography of the eminent Finnish linguist and ethnographer Matias Oleksanteri Kastren, written by Anna-Maria Tallgren. The book examines in detail the life and scientific activity of Matthias Kastren, who made a significant contribution to the study of Finnish, Hungarian, Sami-Yiddish and other Hungarian-Finnish languages. The reader will submit to the unique atmosphere of the book, which allows a better understanding of the complex aspects of the life and work of an outstanding scientist. You will learn about his travels, research, meetings, discoveries and influence on the development of linguistics and ethnography. "Mathias Oleksanteri Castren" is an exciting journey into the world of science and culture, which will reveal to the reader the uniqueness and significance of the figure of this outstanding researcher.