The Ents loved the great trees; and the wild woods, and the slopes of the high hills; and they drank of the mountain-streams, and ate only such fruit as the trees let fall in their path; and they learned of the Elves and spoke with the Trees.
–J.R.R. Tolkien, The Two Towers, Book 3, Chapter 4
‘Of course, it is likely enough, my friends,’ he said slowly, 'likely enough that we are going to our doom: the last march of the Ents. But if we stayed at home and did nothing, doom would find us anyway, sooner or later. That thought has long been growing in our hearts; and that is why we are marching now. It was not a hasty resolve. Now at least the last march of the Ents may be worth a song. Aye,’ he sighed, 'we may help the other peoples before we pass away. Still, I should have liked to see the songs come true about the Entwives. I should dearly have liked to see Fimbrethil again. But there, my friends, songs like trees bear fruit only in their own time and their own way: and sometimes they are withered untimely.'
There is no curse in Elvish, Entish, or the tongues of Men for this treachery. My business is with Isengard tonight, with a rock and stone. Come, my friends, the Ents are going to war. It is likely that we go to our doom. The last march of the Ents.
A queer look came into the old eyes, a kind of wariness; the deep wells were covered over. ‘Hrum, now,’ answered the voice; 'well, I am an Ent, or that’s what they call me. Yes, Ent is the word. The Ent, I am, you might say, in your manner of speaking. Fangorn is my name according to some, Treebeard others make it. Treebeard will do.’