The Two Towers, “The Voice of Saruman”:
Suddenly another voice spoke, low and melodious, its very sound an enchantment. Those who listened unwarily to that voice could seldom report the words that they heard [Obama's “racism” speech]; and if they did, they wondered for little power remained in them. Mostly they remembered only that it was a delight to hear the voice speaking, all that it said seemed wise and reasonable, and desire awoke in them by swift agreement to seem wise themselves. When others spoke they seemed harsh and uncouth by contrast; and if they gainsaid the voice, anger was kindled in the hearts of those under the spell [...] But none were unmoved; none rejected its pleas and its commands without an effort of mind and will, so long as its master had control of it.
Return of the King, “Many Partings”:
[Gandalf said,] “I fancy [Saruman] could do some mischief still in a small mean way.”
Return of the King, “The Scouring of the Shire”:
[Saruman said,] “ ‘One ill turn deserves another.’ It would have been a sharper lesson, if only you had given me a little more time and more Men. Still I have already done much that you will find it hard to mend or undo in your lives. And it will be pleasant to think of that and set it against my injuries.”...
But Frodo said, “...He has lost all power, save his voice that can still daunt you and deceive you, if you let it. ...”