“One swallow does not make a summer, but one skein of geese, cleaving the murk of a March thaw, is the spring.”
“March: The Geese Return”, p. 18.
A Sand County Almanac, 1949, "January Thaw", "February: Good Oak" & "March: The Geese Return"
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Aldo Leopold 130
American writer and scientist 1887–1948Related quotes

“One swallow maketh not summer.”
Part II, chapter 5.
Proverbs (1546), Bartlett's Familiar Quotations, 10th ed. (1919)

“No spring, nor summer beauty hath such grace,
As I have seen in one autumnal face.”
No. 9, The Autumnal, line 1
Elegies
Source: The Complete Poetry and Selected Prose

“I enjoy the spring more than the autumn now. One does, I think, as one gets older.”
Source: Jacob's Room
Source: Don't Judge a Girl by Her Cover

“It was one of the warm nights at the end of summer that makes promises that won't be kept.”
Source: The Wizard Heir