A Treacherous Weapon is Ever a Danger to the Hand

A little wisdom from J. R. R. Tolkien:

But let us not darken our hearts by imagining the trial of their gentle loyalty in the Dark Tower. For the Enemy has failed---so far. Thanks to Saruman.'

'Then is not Saruman a traitor?' said Gimli.

'Indeed yes.' said Gandalf. 'Doubly. And is not that strange? Nothing that we have endured of late has seemed so grievous as the treason of Isengard. Even reckoned as a lord and captain Saruman has grown very strong. He threatens the Men of Rohan and draws off their help from Minas Tirith, even as the main blow is approaching from the East. Yet a treacherous weapon is ever a danger to the hand. Saruman also had a mind to capture the Ring for himself, or at least to snare some hobbits for his evil purposes. So between them our enemies have contrived only to bring Merry and Pippin with marvellous speed, and in the nick of time, to Fangorn, where otherwise they would never have come at all!

'Also they have filled themselves with new doubts that disturb their plans. No tidings of the battle will come to Mordor, thanks to the horsemen of Rohan; but the Dark Lord knows that two hobbits were taken in the Emyn Muil and borne away towards Isengard against the will of his own servants. He now has Isengard to fear as well as Minas Tirith. If Minas Tirith falls, it will go ill with Saruman.'

'It is a pity that our friends lie in between,' said Gimli. 'If no land divided Isengard and Mordor, then they could fight while we watched and waited.'

'The victor would emerge stronger than either, and free from doubt,' said Gandalf. 'But Isengard cannot fight Mordor, unless Saruman first obtains the Ring. That he will never do now. He does not know his peril. There is much that he does not know.' (J. R. R. Tolkien, The Two Towers, chapter 5.)