1. The good thing about them is that you can look at them with the sound turned down [of the Spice Girls].
2. The chief enjoyment of riches consists in the parade of riches.
3. Rose is a rose is a rose is a rose, is a rose.
4. When I split an infinitive, G-d damn it, I split it so it will stay split!
5. Curtsey while you're thinking what to say. It saves time.
Clues
Musical groups, famous with libertarians, philosophy, hard-boiled detective, children
Answers, as usual, require you to highlight below
George Harrison, the Independent, 1997; Adam Smith, Wealth of Nations, 1776; Gertrude Stein, Sacred Emily, 1913; Raymond Chandler, to a proof-reader, 1947; Lewis Carroll, Through the Looking Glass, 1872