Absolutely Evil

[Boromir88]

2. No one does something thinking that they themselves are evil. They see themselves as a good person, or the person does not see at all.

Interesting, and I agree. I think this describes Saruman quite well. I think a majority of the "evil-doers" in history, in literature...etc had felt like what they were doing was right, it was just. It's sort of like the ends and means sort of thing. Who cares if I commit these heinous acts the end will justify the means. And there's a quote from the Council of Elrond where we see Saruman fit perfectly into this category:

We can join with that Power. It would be wise, Gandalf. There is hope that way. Its victory is at hand; and there will be rich reward for those that aided it. As the Power grows; its proved friends will also grow; and the Wise, such as you and I, may with patience come at last to direct its courses, to control it. We can bide our time, we can keep our thoughts in our hearts, deploring maybe evils done by the way, but approving the high and ultimate purpose: Knowledge, Rule, Order; all the things that we have so far striven in vain to accomplish, hindered rather than helped by our weak or idle friends. There need not be, there would not be, any real change in our designs, only in our means.~The Council of Elrond

To Saruman it doesn't matter how he does it, who gets hurt, what he does, what matters is in the end he thinks that what he's doing is right. He thinks what he's doing is why the Istari were sent to Middle-earth. He thinks, doesn't matter if he joins with Sauron, because in the end he plans to backstab him and complete his mission. And we all know Saruman is fooled and has leddown the wrong path.