Marx himself defined Communism/Socialism as the antithesis which requires the thesis of Capitalism to be created.
"What we have to deal with here is a communist society, not as it has developed on its own foundations, but on the contrary, just as it emerges from capitalist society: which is thus in every respect still stamped with the birthmarks of the old society from whose womb it emerges."
-Karl MarxFurthermore one of those is my statement, and one is a quote from Karl Marx, so even IF the two quotes were exclusive (they are not) it still would not be "my own contradiction" because one is a statement made by another person.
So do you ever have any thoughts of your own or do you need to wait for me to have one so you can just repeat it back to me? I am very sorry your reading comprehension is so poor, and your knowledge of your own ideology is so lacking that you are unable to see those quotes are not contradictory, but maybe if you imagine it hard enough...