For

For every peak you conquer
There must be a valley
For every bridge you cross
There must be a chasm
For every notable accomplishment
There must be trials and tribulations
For memorable moment
There must be boredom and inactivity
Without one
The other has no meaning
Without the other
The one would have no meaning
To truly walk as one with light
You must experience darkness
To once again
Soar with the angels
One must trod
The dusty roads of earth