This poem is soo confusing. Can someone help me?

I had to go on a web site and this is what I found. "The central theme of Ozymandias is mankind's hubris. Shelly, the author, condenses the history of not only Ozymandias' rise, peak and fall, but also that of an entire civilization. Without directly stating it, Shelley shows that all works of humankind-as well as humans themselves-are temporal. Where you be a Pharaoh or peasant, you are just as mortal as any other living thing. Ozymandias was another name of Ramesses the Great, Pharaoh of the nineteenth dynasty of ancient Egypt. The sonnet paraphrases the inscription on the base of the statue, "King of Kings am I," means if anyone would know how great I am and where I lie, let him surps one of my works" Hope this helps. Below is the web site.