[Anguirel]

I liked davem's point about Saruman's single-minded pursuit of his mission being his downfall. After all, even at his worst he intended to one day topple Sauron.

I am reminded of Celegorm and Curufin, (my heroes!) who kidnapped Luthien and usurped Nargothrond with the ultimate intention of battling Morgoth and retaking the Silmarils-but only once all the realms and resources of Beleriand were under their control, thus making an attack on Morgoth feasible. It's a case of mistaken consequentialist reasoning, and often leads to getting absorbed by the treacherous means and forgetting the noble end.

Gandalf, on the other hand, while he persuades and tricks, thus assuming a "higher" position than his "victims", always does so for their own good, rather than his. Saruman becomes devoid of altruism; Gandalf, even to the very end, advises his Hobbit friends for their benefit:

"I will not say do not weep, for not all tears are an evil."