[HairOfTheDog]

I think it makes perfect sense. Frodo had to decide he could go on alone. That he would not compel any others to walk into such a doom, though they would have gone. And Sam, better than the others, guessed his masters heart. Sam had to go. And Frodo needs him to go, though he could never ask it.

[JenB]

Yes, Frodo also didn't feel he could ask anyone to share his difficulties. Not even Sam - it wouldn't have been right for him to ask anyone to come, not when he knew what the Ring could do. Sam had to offer on his own, not that there was any doubt he would do so.

[Bear_in_RoseBear]

And Sam, better than the others, guessed his masters heart.

Has anyone else noticed that even though Frodo keeps his thoughts to himself, everyone else always seems to know just what it is he's thinking? First in "A Conspiracy Unmasked", and now here. I'm not sure what JRRT was trying to say about Frodo, but in my mind it tends to diminish Frodo just a bit.