Thus in the winter stands the lonely tree,
Nor knows what birds have vanished one by one,
Yet knows its boughs more silent than before:
I cannot say what loves have come and gone,
I only know that summer sang in me
A little while, that in me sings no more.
Sonnet XLIII: "What lips my lips have kissed, and where, and why" (1923), Collected Poems", 1931