[It does seem as though the line of Durin is terrible at hiding their emotions. Thorin knows the look of pain and sorrow in his nephew's eyes and contemplates asking him about it or if he should just leave it be.]

You've not traveled much, perhaps with time you shall get used to it.

[Thorin had done so much traveling in his time that the ground or a proper bed mattered not as long as he had furs to cover himself with to sleep. Even that wasn't needed most of the time. He'd slept in so many places now, when he could sleep that is, that a proper bed was probably more strange than the ground.]

But you can rest here for the day, your feet will thank you tomorrow when you work along side me. [For now he'll leave whatever is bothering Kili. No doubt his fight with his brother. They did not do well when separated from one another.]