O, ever skilled to wear the form we love!
To bid the shapes of fear and grief depart;
Come, gentle Hope! with one gay smile remove
The lasting sadness of an aching heart.
Thy voice, benign Enchantress! let me hear;
Say that for me some pleasures yet shall bloom,--
That Fancy's radiance, Friendship's precious tear,
Shall soften, or shall chase, misfortune's gloom.
But come not glowing in the dazzling ray,
Which once with dear illusions charm'd my eye,--
O! strew no more, sweet flatterer! on my way
The flowers I fondly thought too bright to die;
Visions less fair will soothe my pensive breast,
That asks not happiness, but longs for rest!

Helen Maria Williams

http://www.poemhunter.com/poem/sonnet-to-hope/