Classic Poem

This pair a certain Happyness might prove,
Confin'd to constancy and mutual Love.
Heaven to one object limited his vows,
The only safety faithless Nature knows,
(?) saw his wand'ring appetite would range
And wisely kept him from the power to change,
(?) the world peopled falsehood soon began,
Through ev'ry age the swift Contagion ran,
This makes the censure of the world more just
That brands with shame the weakness of a trust.