Catullus 70

Nulli se dicit mulier mea nubere malle
My woman says that she prefers to marry no one

quam mihi, non si se Iuppiter ipse petat.
than me, not if Jupiter himself should seek her.

dicit; sed mulier cupido quod dicit amanti,
She says this, but what a woman says to a desiring lover,

in vento et rapida scribere oportet aqua.
one ought to write on the wind and the swiftly moving water.