Boole's law of thought

I was browsing in Amazon the other day. The book "An Investigation of the Laws of Thought" by George Boole came up. This is a real classic and I was considering buying it. But was I happy to find that the whole text is available by Project Gutenberg. Now I just need to print the 328 pages...

P.S. I really like Amazon because you can really go shopping there, browsing through there product by various means. They have good recommendation lists and people can set up their own lists of favorite items. I think it works really well and I like it.