Thoreau writes in his journal:
It is so cool a morning that for the first time I move into the entry to sit in the sun. But in this cooler weather I feel as if the fruit of my summer were hardening and maturing a little, acquiring color and flavor like the corn and other fruits in the field. When the very earliest ripe grapes begin to be scented in the cool nights, then, too, the first cooler airs of autumn begin to waft my sweetness on the desert airs of summer . . .