Being in poverty is sorrow.
Leaving comfort is sorrow.
Wish withheld is sorrow.
Fear upheld is sorrow.
Contact with unpleasantness is sorrow.
Separation from pleasantness is sorrow.
If there is no shadow
There will be no ray.
Both compliments each other..
Rm.Shanmugam Chettiar.
http://www.poemhunter.com/poem/sorrow-and-joy-3/