Windianápolis

Who has seen the wind?
Neither I nor you:
But when the leaves hang trembling,
The wind is passing through.

Who has seen the wind?
Neither you nor I:
But when the trees bow down their heads,
The wind is passing by.

Christina Rossetti, in «Who Has Seen the Wind?», The Complete Poems (Penguin Classics, 1993, p. 143)