Sorry, Legolas; truth can't be found among the fictional.
Quote #2
Anything more than the truth would have seemed too weak (9)
This really is the most powerful line in the whole poem. Or at the very least it's the one that makes the most sense without us having to think too hard.
Quote #3
The fact is the sweetest dream that labor knows. (13)
Then again, if labor is caught sleeping it'll probably be fired anyway, which kind of gets in the way of most dreams.