If you are a native english speaker, it is not difficult to understand this. It might seem daunting because there are a lot of unnecessary words. This passage might be from a book or poem written a long time ago. So don't worry, this is not a common style of writing in today's world. A paraphrased version might be: If only man could be freed, from the corruption of society and its artificial conventions, from the burden of property, of the state, of the clergy, and of the rules of matrimony, then man , it clearly seemed, could rise to heights undreamed of before - (man) could, indeed, become a kind of superman, practically a god.