...
But this was taught me by the dove -
To die - and know no second love.
This lesson yet hath man to learn
Taught by the thing he dares to spurn -
The bird that sings within the brake,
The swan that swims upon the lake,
One mate, and one alone, will take.
...
...
Earth holds no other like to thee,
Or if it doth in vain for me -
...
Byron