During my career I had read a lot of different authors that I have like and also dislike. But definitely my favorite one has been Karl Marx. He born in Tréveris, Germany on the year 1818, watching by his own eyes the develop of the rising capitalism in Europe. He wrote a lot of books with his partner and friend Friederich Engels, and they had a lot of influence in the XX century politics, philosophy, and economy.
Basically, they described very well the beginnings of the Capital, and how the production process becomes from the big contradiction between the social productions relationships, and the property of the production resources. All this results on the exploitation of the workers.
Marx and Engels arrives to the conclusion that the workers, or the proletarians, have to fight and liberates from the bourgeois, because is very unfair. They wrote famous books like the “Communist Manifiest”
I like them, because they made a huge transformation in the history, since their work a lot of workers get organized and fought against the injustice. Sometimes with good results, and other times with bad results, the important is that it make an historical change.