"That is very true." He finally starts to get comfortable, sitting down and stretching out his legs - it's been a long day.

And that is a curious cue - that he was a child. It doesn't necessarily make him human, but it does mean that he was born, or at least it should mean that. "Though to us, the difference still is visible, if one simply looks." Elves, men and dwarves as well as ainur have spirits, while simple animals do not. If he was to encounter a being seemingly animal or plant, yet in possession of a spirit, it would likely be noticeable to him just by sight.