Outside, she thought that there ought to be a word for it: the air temperature that was perfectly neither hot nor cold. One degree lower, and she might have felt a faint misgiving about not having brought a jacket. One degree higher, and a skim of sweat might have glistened at her hairline. But at this precise degree, she required neither wrap nor breeze. Were there a word for such a temperature, there would have to be a corollary for the particular ecstasy of greeting it - the heedlessness, the needlessness, the suspended lack of urgency, as if time could stop, or should. Usually temperature was a battle; only at this exact fulcrum was it an active delight.
Lionel Shriver, The Post-Birthday World
happiness, temperature