In a more general sense, this song is just about feeling alone. In the city especially, it's easy to feel lost among a sea of people. The lyric "I wanna ask for direction/But I don't dare to disturb" seems to point to that; it's difficult for that narrator to trust and forge relationships because he doesn't want to impose. But he's self aware, he knows that "it's a beautiful world", and he wants to try. That's how I see it, anyway. Oh, and arkyhogs totally reworded kalan60's comment.
In a more general sense, this song is just about feeling alone. In the city especially, it's easy to feel lost among a sea of people. The lyric "I wanna ask for direction/But I don't dare to disturb" seems to point to that; it's difficult for that narrator to trust and forge relationships because he doesn't want to impose. But he's self aware, he knows that "it's a beautiful world", and he wants to try. That's how I see it, anyway. Oh, and arkyhogs totally reworded kalan60's comment.