Replying to Books on human nature/government

I am looking for some good books about human nature, and stuff on government

On the human nature part I have enjoyed books such as:
The Brothers Karamazov -dotevinsky (sp, I know)
Lord of the Flies- William Golding (my favorite book)
The Stranger-Albert Camuus
Speaker for the dead through children of the mind-Orson Scott Card

On the government part I have enjoyed:
1984 -George Orwell
Animal Farm-George Orwell
Brave New World-Alduous Huxley
I have read alot of stuff by Locke, Rousseu(sp) and Hobbes

I would love to hear what NS has to say for books I should read, I search barred but there was nothing really for what I was looking for.