How we cite our quotes: (Part.Paragraph)
Quote #4
[I]n his scrap book at home there were pages of description about New York hotels, cut from the Sunday papers. When he was shown to his sitting-room on the eighth floor, he saw at a glance that everything was as it should be; there was but one detail in his mental picture that the place did not realize, so he rang for the bell boy and sent him down for flowers. (2.41)
This is how we know that Paul is living out a fantasy: He actually makes sure that the reality matches his second-hand vision of what rich people do.
Quote #5
There were a score of cabs about the entrance of his hotel, and his driver had to wait. Boys in livery were running in and out of the awning stretched across the sidewalk, up and down the red velvet carpet laid from the door to the street. (2.48)
Look, an actual red carpet! Yes, the people thronging outside the Waldorf (where Paul is staying) are so rich that they can't soil their feet by walking on concrete or asphalt or whatever streets were made of in 1905. Paul is totally jealous.
Quote #6
He felt now that his surroundings explained him. Nobody questioned the purple; he had only to wear it passively. He had only to glance down at his attire to reassure himself that here it would be impossible for anyone to humiliate him. (2.52)
"Purple" is a code for rich, rich, rich. Way back in the day, only rich and powerful people (nobleman and officials high in the church) could wear this color, because it was expensive to produce. Paul isn't actually wearing purple clothes, here—but he sure does feel like royalty.