I dropped Spanish which was the only language offered during my high school years. I regret it, and now I’m embarrassed to start learning as a uni-aged guy. I want to learn Mandarin because then I would know English and Mandarin which would cover like 50% of the populations speaking abilities.
Basically I just feel like a dumb American and being a Marxist I need to know another language.
I think Marxism is not mainly about how much you know, but more about putting what you know into practice to help the oppressed class.
Remember when it was only rich people who could afford the time and money for decent education, or any education at all (still applies in some areas of the world)? What did most of those people do with all their knowledge? Sure some of them furthered the wealth of human knowledge, by just being the only people who could afford to be in that position.
I suggest reading this short essay by Karl Marx: Reflections of a Young Man on The Choice of a Profession. It is about choosing a profession but really you can apply it to choosing what to learn or do.
Some quotes: