The Two Towers
He gazed back along the way that they had come towards the night gathering in the East. "There is something strange at work in this land. I distrust the silence. I distrust even the pale Moon. The stars are faint; and I am weary as I have seldom been before, weary as no Ranger should be with a clear trail to follow. There is some will that lends speed to our foes and sets an unseen barrier before us: a weariness that is in the heart more than in the limb."
"Saruman!" muttered Aragorn. "But he shall not turn us back! Halt we must once more; for, see! Even the Moon is falling into gathering cloud. But north lies our road between down and fen when day returns. (3.2.69,71)
"An Ent?" said Merry. "What's that? But what do you call yourself? What's your real name?"
"Hoo now!" replied Treebeard. "Hoo! Now that would be telling! Not so hasty. And I am doing the asking. You are in my country. What are you, I wonder? I cannot place you." (3.4.25-6)
"Yes, you may still call me Gandalf," he said, and the voice was the voice of their old friend and guide. "Get up, my good Gimli! No blame to you, and no harm done to me. Indeed my friends, none of you have any weapon that could hurt me. Be merry! We meet again. At the turn of the tide. The great storm is coming, but the tide has turned."
"Yes, I am white now," said Gandalf. "Indeed I am Saruman, one might almost say, Saruman as he should have been." (3.5.76,78)