My Muse may well grudge at my heav'nly joy,  
If still I force her in sad rimes to creep:  
She oft hath drunk my tears, now hopes t'enjoy  
Nectar of mirth, since I Jove's cup do keep.  
 
Sonnets be not bound prentice to annoy:  
Trebles sing high, as well as basses deep:  
Grief but Love's winter livery is, the boy  
Hath cheeks to smile, as well as eyes to weep.  
 
Come then, my Muse, show thou height of delight  
In well-rais'd notes, my pen the best it may  
Shall paint out joy, though but in black and white. 
 
Cease, eager Muse; peace, pen, for my sake stay;  
I give you here my hand for truth of this:  
Wise silence is best music unto bliss.
Sir Philip Sidney
http://www.poemhunter.com/poem/sonnet-70-my-muse-may-well-grudge/