About him as a person, his historical conditions, his life, his loved ones. Does anyone have any favorite biographies or even just passages from primary or secondary sources? Alternatively, if anyone has the time, what do you think is most important or interesting to understand about Karl Marx as a person, or perhaps about the historical context he lived in?
A lot of these seem so weird they're probably like inside jokes he had with family members. It's kinda neat but also frustrating.