Smart
Light
Cheap
Time
Cold enough
Time to workout
Light enough
No, Use tone, the viewpoint character’s attitude, in every scene to deepen the reader’s connections to the events of that scene and to the character. While the characters feelings is what is affected by the tone.
Quindlen links the conclusion to the introduction of her essay with the words "like many improbable ideas, when it works, it's a wonder", which is very close to her claim in the overall text, "America is an Improbable idea", it isn't supposed to work but it does despite all of the differences, specifically racial or ethnic, within it.