Complex sentence: As Set observes humanity through the ages (acknowledged as a race with such potential despite its flawed nature), he laments and implores mankind to overcome its imperfections to be thus saved from their destructive fate.
Split into simpler sentences: As Set observes humanity through the ages, he acknowledges humans as a race with such potential despite its flawed nature. Set makes a requisition for mankind to overcome its imperfections to be thus saved from their destructive fate.