Marx remains

'DAS KAPITEL' by Karl H. Marx. Japanese translation

When I was proofreading a thesis from one of my Western European students, I came across a quotation from Karl Marx. I couldn't help but ask the student, "Wow! Is Karl Marx still being read today?!" The student smiled and said, "Of course! He is one of the world's greatest thinkers!" This made me realize that if you want to become a scholar, you need to be very diligent and have to read philosophers like Marx even in this day and age.
Now, I wonder what Marx's socialism was. Was it a grand experiment?