I'm not 100% sure this is the right site for this question, but here it goes.

An already dead professor said in a lecture that Stalin (or perhaps another communist leader) wrote once something along the lines that not even statistics (or perhaps mathematics) is free from the influence of class interests. Did Stalin (or anyone) ever said something like that? If so, where is the source of that quote?

Just in case, this is a very different phrase from that misattributed to him that: “The death of one man is a tragedy, the death of millions is a statistic.”