Sorry, I can't pick just one line!
"The hudge sadness of the northern plains rolled down on him."
"He lets a panel of the dream slide forward. If he does not force his attention on it, it might stoke the day, rewarm that old, cold time on the mountain when they owned the world and nothing seemed wrong."
"And he would wake sometimes in grief, sometimes with the old sense of joy and release, the pillow sometimes wet, sometimes the sheets."
"He pressed his face into the fabric and breathed in slowly through his mouth and nose, hoping for the faintest smoke and mountain sage and salty sweet stink of Jack, but there was no real scent, only the memory of it, the imagined power of Brokeback Mountain of which nothing was left but what he held in his hands."
Not to mention the dozy embrace... Damn, just writing those lines is heart-breaking.