I envy not in any moods  
      The captive void of noble rage, 
      The linnet born within the cage, 
   That never knew the summer woods: 
   I envy not the beast that takes 
      His license in the field of time, 
      Unfetter'd by the sense of crime, 
   To whom a conscience never wakes; 
   Nor, what may count itself as blest, 
    The heart that never plighted troth 
    But stagnates in the weeds of sloth; 
  Nor any want-begotten rest. 
 
  I hold it true, whate'er befall; 
    I feel it, when I sorrow most; 
    'Tis better to have loved and lost 
  Than never to have loved at all.
Alfred Lord Tennyson
http://www.poemhunter.com/poem/in-memoriam-a-h-h-16-i-envy-not-in-any-moods/