The book "Marx, whom he knew" by the famous author John Spargo is a fascinating journey into the world of ideas and views of the great thinker Karl Marx through the prism of his personal life and his relationships with others. The author reveals the unique aspects of Marx's biography, his most difficult periods of life, his most significant works and ideas, as well as his interaction with other outstanding philosophers and political figures of the 19th century. The reader has the opportunity to better understand not only the greatness and influence of Marx on the modern world, but also his human essence, passions and the origins of his genius. "The Marx He Knew" is a wonderful book for those who seek to expand their knowledge of history and philosophy, and get to know the depths of the thoughts of one of the most influential thinkers of all time.