Inconstancy.

And do I then wonder that Julia deceives me,
When surely there's nothing in nature more common?
She vows to be true, and while vowing she leaves me--
And could I expect any more from a woman?
Oh, woman! your heart is a pitiful treasure;
And Mahomet's doctrine was not too severe,
When he held that you were but materials of pleasure,
And reason and thinking were out of your sphere.
By your heart, when the fond sighing lover can win it,
He thinks that an age of anxiety's paid;
But, oh, while he's blest, let him die at the minute--
If he live but a day, he'll be surely betrayed.